257646016 has 28 divisors (see below), whose sum is σ = 541343088. Its totient is φ = 121244672.

The previous prime is 257645987. The next prime is 257646017. The reversal of 257646016 is 610646752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257646017) 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, 117316 + ... + 119491.

Almost surely, 2^257646016 is an apocalyptic number.

It is an amenable number.

257646016 is an abundant number, since it is smaller than the sum of its proper divisors (283697072).

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

257646016 is a wasteful number, since it uses less digits than its factorization.

257646016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236836 (or 236826 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 257646016 is about 16051.3555813831. The cubic root of 257646016 is about 636.3183933796.

The spelling of 257646016 in words is "two hundred fifty-seven million, six hundred forty-six thousand, sixteen".