256232460 has 48 divisors (see below), whose sum is σ = 782675712. Its totient is φ = 62116800.

The previous prime is 256232413. The next prime is 256232477. The reversal of 256232460 is 64232652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 193456 + ... + 194775.

It is an arithmetic number, because the mean of its divisors is an integer number (16305744).

Almost surely, 2^256232460 is an apocalyptic number.

256232460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256232460 is an abundant number, since it is smaller than the sum of its proper divisors (526443252).

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

256232460 is a wasteful number, since it uses less digits than its factorization.

256232460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388254 (or 388252 counting only the distinct ones).

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

The square root of 256232460 is about 16007.2627266501. The cubic root of 256232460 is about 635.1525539190.

The spelling of 256232460 in words is "two hundred fifty-six million, two hundred thirty-two thousand, four hundred sixty".