102657256 has 16 divisors (see below), whose sum is σ = 207288900. Its totient is φ = 47380224.

The previous prime is 102657253. The next prime is 102657263. The reversal of 102657256 is 652756201.

It can be written as a sum of positive squares in 2 ways, for example, as 100600900 + 2056356 = 10030^2 + 1434^2 .

It is not an unprimeable number, because it can be changed into a prime (102657253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493441 + ... + 493648.

Almost surely, 2^102657256 is an apocalyptic number.

It is an amenable number.

102657256 is an abundant number, since it is smaller than the sum of its proper divisors (104631644).

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

102657256 is a wasteful number, since it uses less digits than its factorization.

102657256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987108 (or 987104 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 102657256 is about 10131.9917094321. The cubic root of 102657256 is about 468.2342923112.

The spelling of 102657256 in words is "one hundred two million, six hundred fifty-seven thousand, two hundred fifty-six".