256233480 has 32 divisors (see below), whose sum is σ = 768700800. Its totient is φ = 68328896.

The previous prime is 256233479. The next prime is 256233493. The reversal of 256233480 is 84332652.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067520 + ... + 1067759.

It is an arithmetic number, because the mean of its divisors is an integer number (24021900).

Almost surely, 2^256233480 is an apocalyptic number.

256233480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256233480 is an abundant number, since it is smaller than the sum of its proper divisors (512467320).

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

256233480 is a wasteful number, since it uses less digits than its factorization.

256233480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135293 (or 2135289 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 256233480 is about 16007.2945871562. The cubic root of 256233480 is about 635.1533967146.

The spelling of 256233480 in words is "two hundred fifty-six million, two hundred thirty-three thousand, four hundred eighty".