257241008 has 20 divisors (see below), whose sum is σ = 527722920. Its totient is φ = 121054464.

The previous prime is 257240969. The next prime is 257241013. The reversal of 257241008 is 800142752.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472598 + ... + 473141.

It is an arithmetic number, because the mean of its divisors is an integer number (26386146).

Almost surely, 2^257241008 is an apocalyptic number.

It is an amenable number.

257241008 is an abundant number, since it is smaller than the sum of its proper divisors (270481912).

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

257241008 is a wasteful number, since it uses less digits than its factorization.

257241008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945764 (or 945758 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 257241008 is about 16038.7346134288. The cubic root of 257241008 is about 635.9847971789.

The spelling of 257241008 in words is "two hundred fifty-seven million, two hundred forty-one thousand, eight".