256132434 has 16 divisors (see below), whose sum is σ = 513816480. Its totient is φ = 85118880.

The previous prime is 256132433. The next prime is 256132441. The reversal of 256132434 is 434231652.

It is not an unprimeable number, because it can be changed into a prime (256132433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62499 + ... + 66470.

It is an arithmetic number, because the mean of its divisors is an integer number (32113530).

Almost surely, 2^256132434 is an apocalyptic number.

256132434 is an abundant number, since it is smaller than the sum of its proper divisors (257684046).

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

256132434 is a wasteful number, since it uses less digits than its factorization.

256132434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129305.

The product of its digits is 17280, while the sum is 30.

The square root of 256132434 is about 16004.1380273978. The cubic root of 256132434 is about 635.0698945529.

The spelling of 256132434 in words is "two hundred fifty-six million, one hundred thirty-two thousand, four hundred thirty-four".