257089970 has 16 divisors (see below), whose sum is σ = 467088768. Its totient is φ = 101874480.

The previous prime is 257089951. The next prime is 257089993. The reversal of 257089970 is 79980752.

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, 119066 + ... + 121205.

It is an arithmetic number, because the mean of its divisors is an integer number (29193048).

Almost surely, 2^257089970 is an apocalyptic number.

257089970 is a deficient number, since it is larger than the sum of its proper divisors (209998798).

257089970 is a wasteful number, since it uses less digits than its factorization.

257089970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240385.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 257089970 is about 16034.0253835398. The cubic root of 257089970 is about 635.8603008571.

The spelling of 257089970 in words is "two hundred fifty-seven million, eighty-nine thousand, nine hundred seventy".