257433070 has 16 divisors (see below), whose sum is σ = 464339808. Its totient is φ = 102759840.

The previous prime is 257433041. The next prime is 257433073. The reversal of 257433070 is 70334752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257433073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21561 + ... + 31300.

It is an arithmetic number, because the mean of its divisors is an integer number (29021238).

Almost surely, 2^257433070 is an apocalyptic number.

257433070 is a deficient number, since it is larger than the sum of its proper divisors (206906738).

257433070 is a wasteful number, since it uses less digits than its factorization.

257433070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53355.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 257433070 is about 16044.7209386764. The cubic root of 257433070 is about 636.1430380520.

The spelling of 257433070 in words is "two hundred fifty-seven million, four hundred thirty-three thousand, seventy".