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30145696 = 257592281
BaseRepresentation
bin111001011111…
…1110010100000
32002201120010021
41302333302200
530204130241
62554043224
7514143220
oct162776240
962646107
1030145696
111601a9a9
12a119514
1363263b9
14400a080
1529a70d1
hex1cbfca0

30145696 has 48 divisors (see below), whose sum is σ = 69007680. Its totient is φ = 12695040.

The previous prime is 30145693. The next prime is 30145699. The reversal of 30145696 is 69654103.

It is an interprime number because it is at equal distance from previous prime (30145693) and next prime (30145699).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30145693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12076 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (1437660).

Almost surely, 230145696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30145696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34503840).

30145696 is an abundant number, since it is smaller than the sum of its proper divisors (38861984).

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

30145696 is a wasteful number, since it uses less digits than its factorization.

30145696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30145696 is about 5490.5096302620. The cubic root of 30145696 is about 311.2254510942.

Adding to 30145696 its reverse (69654103), we get a palindrome (99799799).

The spelling of 30145696 in words is "thirty million, one hundred forty-five thousand, six hundred ninety-six".

Divisors: 1 2 4 7 8 14 16 28 32 56 59 112 118 224 236 413 472 826 944 1652 1888 2281 3304 4562 6608 9124 13216 15967 18248 31934 36496 63868 72992 127736 134579 255472 269158 510944 538316 942053 1076632 1884106 2153264 3768212 4306528 7536424 15072848 30145696