256018830 has 32 divisors (see below), whose sum is σ = 624522528. Its totient is φ = 67152000.

The previous prime is 256018817. The next prime is 256018831. The reversal of 256018830 is 38810652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256018791 and 256018800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256018831) 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 15 ways as a sum of consecutive naturals, for example, 68121 + ... + 71780.

It is an arithmetic number, because the mean of its divisors is an integer number (19516329).

Almost surely, 2^256018830 is an apocalyptic number.

256018830 is an abundant number, since it is smaller than the sum of its proper divisors (368503698).

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

256018830 is a wasteful number, since it uses less digits than its factorization.

256018830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139972.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 256018830 is about 16000.5884266798. The cubic root of 256018830 is about 634.9759885107.

The spelling of 256018830 in words is "two hundred fifty-six million, eighteen thousand, eight hundred thirty".