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230511996 = 2232111344777
BaseRepresentation
bin11011011110101…
…01010101111100
3121001202020000100
431233111111330
5433002340441
634512401100
75466214431
oct1557252574
9531666010
10230511996
11109133090
1265246190
13389ab340
1422885b88
1515384cb6
hexdbd557c

230511996 has 72 divisors (see below), whose sum is σ = 684566064. Its totient is φ = 64477440.

The previous prime is 230511929. The next prime is 230512013. The reversal of 230511996 is 699115032.

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

It is a self number, because there is not a number n which added to its sum of digits gives 230511996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17241 + ... + 27536.

It is an arithmetic number, because the mean of its divisors is an integer number (9507862).

Almost surely, 2230511996 is an apocalyptic number.

230511996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

230511996 is an abundant number, since it is smaller than the sum of its proper divisors (454054068).

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

230511996 is a wasteful number, since it uses less digits than its factorization.

230511996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44811 (or 44806 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 230511996 is about 15182.6215127691. The cubic root of 230511996 is about 613.1468626843.

The spelling of 230511996 in words is "two hundred thirty million, five hundred eleven thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 9 11 12 13 18 22 26 33 36 39 44 52 66 78 99 117 132 143 156 198 234 286 396 429 468 572 858 1287 1716 2574 5148 44777 89554 134331 179108 268662 402993 492547 537324 582101 805986 985094 1164202 1477641 1611972 1746303 1970188 2328404 2955282 3492606 4432923 5238909 5910564 6403111 6985212 8865846 10477818 12806222 17731692 19209333 20955636 25612444 38418666 57627999 76837332 115255998 230511996