2856573840 has 80 divisors (see below), whose sum is σ = 8863236288. Its totient is φ = 761077248.

The previous prime is 2856573823. The next prime is 2856573871. The reversal of 2856573840 is 483756582.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2856573840.

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, 303282 + ... + 312558.

Almost surely, 2^2856573840 is an apocalyptic number.

2856573840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2856573840 is an abundant number, since it is smaller than the sum of its proper divisors (6006662448).

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

2856573840 is a wasteful number, since it uses less digits than its factorization.

2856573840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10576 (or 10570 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The square root of 2856573840 is about 53446.9254494587. The cubic root of 2856573840 is about 1418.8892060294.

The spelling of 2856573840 in words is "two billion, eight hundred fifty-six million, five hundred seventy-three thousand, eight hundred forty".