257033690 has 16 divisors (see below), whose sum is σ = 463387392. Its totient is φ = 102651984.

The previous prime is 257033681. The next prime is 257033701. The reversal of 257033690 is 96330752.

257033690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257033690² = 132132635590032200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257033690.

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, 13394 + ... + 26333.

It is an arithmetic number, because the mean of its divisors is an integer number (28961712).

Almost surely, 2^257033690 is an apocalyptic number.

257033690 is a deficient number, since it is larger than the sum of its proper divisors (206353702).

257033690 is a wasteful number, since it uses less digits than its factorization.

257033690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40381.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 257033690 is about 16032.2702696780. The cubic root of 257033690 is about 635.8138983864.

The spelling of 257033690 in words is "two hundred fifty-seven million, thirty-three thousand, six hundred ninety".