256680452 has 24 divisors (see below), whose sum is σ = 514295040. Its totient is φ = 109805760.

The previous prime is 256680439. The next prime is 256680461. The reversal of 256680452 is 254086652.

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, 7877 + ... + 23987.

It is an arithmetic number, because the mean of its divisors is an integer number (21428960).

Almost surely, 2^256680452 is an apocalyptic number.

It is an amenable number.

256680452 is an abundant number, since it is smaller than the sum of its proper divisors (257614588).

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

256680452 is a wasteful number, since it uses less digits than its factorization.

256680452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691 (or 16689 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 256680452 is about 16021.2500136537. The cubic root of 256680452 is about 635.5225013147.

The spelling of 256680452 in words is "two hundred fifty-six million, six hundred eighty thousand, four hundred fifty-two".