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230636448 = 25327233491
BaseRepresentation
bin11011011111100…
…11101110100000
3121001222112201200
431233303232200
5433020331243
634515201200
75500243320
oct1557635640
9531875650
10230636448
11109208639
12652a6200
1338a22b93
14228b9280
15153abad3
hexdbf3ba0

230636448 has 144 divisors (see below), whose sum is σ = 754318656. Its totient is φ = 65479680.

The previous prime is 230636411. The next prime is 230636489. The reversal of 230636448 is 844636032.

It is a happy number.

230636448 is a `hidden beast` number, since 2 + 3 + 0 + 6 + 3 + 644 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×2306364482 = 106386342292113408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469483 + ... + 469973.

It is an arithmetic number, because the mean of its divisors is an integer number (5238324).

Almost surely, 2230636448 is an apocalyptic number.

230636448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230636448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377159328).

230636448 is an abundant number, since it is smaller than the sum of its proper divisors (523682208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230636448 is a wasteful number, since it uses less digits than its factorization.

230636448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 230636448 is about 15186.7194614242. The cubic root of 230636448 is about 613.2571875643.

The spelling of 230636448 in words is "two hundred thirty million, six hundred thirty-six thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 96 112 126 144 168 224 233 252 288 336 466 491 504 672 699 932 982 1008 1398 1473 1631 1864 1964 2016 2097 2796 2946 3262 3437 3728 3928 4194 4419 4893 5592 5892 6524 6874 7456 7856 8388 8838 9786 10311 11184 11784 13048 13748 14679 15712 16776 17676 19572 20622 22368 23568 26096 27496 29358 30933 33552 35352 39144 41244 47136 52192 54992 58716 61866 67104 70704 78288 82488 109984 114403 117432 123732 141408 156576 164976 228806 234864 247464 329952 343209 457612 469728 494928 686418 800821 915224 989856 1029627 1372836 1601642 1830448 2059254 2402463 2745672 3203284 3660896 4118508 4804926 5491344 6406568 7207389 8237016 9609852 10982688 12813136 14414778 16474032 19219704 25626272 28829556 32948064 38439408 57659112 76878816 115318224 230636448