256210628 has 12 divisors (see below), whose sum is σ = 448573440. Its totient is φ = 128046792.

The previous prime is 256210589. The next prime is 256210631. The reversal of 256210628 is 826012652.

It is a junction number, because it is equal to n+sod(n) for n = 256210594 and 256210603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908 + ... + 22971.

It is an arithmetic number, because the mean of its divisors is an integer number (37381120).

Almost surely, 2^256210628 is an apocalyptic number.

It is an amenable number.

256210628 is a deficient number, since it is larger than the sum of its proper divisors (192362812).

256210628 is a wasteful number, since it uses less digits than its factorization.

256210628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29266 (or 29264 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 256210628 is about 16006.5807716701. The cubic root of 256210628 is about 635.1345142525.

The spelling of 256210628 in words is "two hundred fifty-six million, two hundred ten thousand, six hundred twenty-eight".