257689082 has 16 divisors (see below), whose sum is σ = 442372992. Its totient is φ = 110283120.

The previous prime is 257689037. The next prime is 257689097. The reversal of 257689082 is 280986752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294 + ... + 22817.

It is an arithmetic number, because the mean of its divisors is an integer number (27648312).

Almost surely, 2^257689082 is an apocalyptic number.

257689082 is a deficient number, since it is larger than the sum of its proper divisors (184683910).

257689082 is a wasteful number, since it uses less digits than its factorization.

257689082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25853.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 257689082 is about 16052.6970319632. The cubic root of 257689082 is about 636.3538453299.

The spelling of 257689082 in words is "two hundred fifty-seven million, six hundred eighty-nine thousand, eighty-two".