2556713820 has 48 divisors (see below), whose sum is σ = 7169275008. Its totient is φ = 680792640.

The previous prime is 2556713791. The next prime is 2556713851. The reversal of 2556713820 is 283176552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10627 + ... + 72293.

It is an arithmetic number, because the mean of its divisors is an integer number (149359896).

Almost surely, 2^2556713820 is an apocalyptic number.

2556713820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2556713820 is an abundant number, since it is smaller than the sum of its proper divisors (4612561188).

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

2556713820 is a wasteful number, since it uses less digits than its factorization.

2556713820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62370 (or 62368 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 2556713820 is about 50563.9577169351. The cubic root of 2556713820 is about 1367.3951641227.

The spelling of 2556713820 in words is "two billion, five hundred fifty-six million, seven hundred thirteen thousand, eight hundred twenty".