256698028 has 24 divisors (see below), whose sum is σ = 476449344. Its totient is φ = 120595200.

The previous prime is 256698023. The next prime is 256698031. The reversal of 256698028 is 820896652.

It is not an unprimeable number, because it can be changed into a prime (256698023) 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, 42093 + ... + 47803.

It is an arithmetic number, because the mean of its divisors is an integer number (19852056).

Almost surely, 2^256698028 is an apocalyptic number.

It is an amenable number.

256698028 is a deficient number, since it is larger than the sum of its proper divisors (219751316).

256698028 is a wasteful number, since it uses less digits than its factorization.

256698028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393 (or 6391 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 256698028 is about 16021.7985257586. The cubic root of 256698028 is about 635.5370066246.

The spelling of 256698028 in words is "two hundred fifty-six million, six hundred ninety-eight thousand, twenty-eight".