256528486 has 16 divisors (see below), whose sum is σ = 389305440. Its totient is φ = 126764800.

The previous prime is 256528483. The next prime is 256528537. The reversal of 256528486 is 684825652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256528483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186975 + ... + 188341.

It is an arithmetic number, because the mean of its divisors is an integer number (24331590).

Almost surely, 2^256528486 is an apocalyptic number.

256528486 is a deficient number, since it is larger than the sum of its proper divisors (132776954).

256528486 is a wasteful number, since it uses less digits than its factorization.

256528486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its digits is 921600, while the sum is 46.

The square root of 256528486 is about 16016.5066728048. The cubic root of 256528486 is about 635.3970575611.

The spelling of 256528486 in words is "two hundred fifty-six million, five hundred twenty-eight thousand, four hundred eighty-six".