626828256 has 72 divisors (see below), whose sum is σ = 1799290584. Its totient is φ = 206979840.

The previous prime is 626828239. The next prime is 626828263. The reversal of 626828256 is 652828626.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20646 + ... + 40986.

It is an arithmetic number, because the mean of its divisors is an integer number (24990147).

Almost surely, 2^626828256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626828256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899645292).

626828256 is an abundant number, since it is smaller than the sum of its proper divisors (1172462328).

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

626828256 is a wasteful number, since it uses less digits than its factorization.

626828256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464 (or 20453 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 626828256 is about 25036.5384188789. The cubic root of 626828256 is about 855.8208347766.

The spelling of 626828256 in words is "six hundred twenty-six million, eight hundred twenty-eight thousand, two hundred fifty-six".