257755434 has 32 divisors (see below), whose sum is σ = 543279744. Its totient is φ = 81364800.

The previous prime is 257755429. The next prime is 257755441. The reversal of 257755434 is 434557752.

257755434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4692 + ... + 23184.

It is an arithmetic number, because the mean of its divisors is an integer number (16977492).

Almost surely, 2^257755434 is an apocalyptic number.

257755434 is an abundant number, since it is smaller than the sum of its proper divisors (285524310).

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

257755434 is a wasteful number, since it uses less digits than its factorization.

257755434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18622.

The product of its digits is 588000, while the sum is 42.

The square root of 257755434 is about 16054.7635921554. The cubic root of 257755434 is about 636.4084585955.

The spelling of 257755434 in words is "two hundred fifty-seven million, seven hundred fifty-five thousand, four hundred thirty-four".