2156570200 has 48 divisors (see below), whose sum is σ = 5024466360. Its totient is φ = 860832000.

The previous prime is 2156570189. The next prime is 2156570201. The reversal of 2156570200 is 20756512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156570201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87220 + ... + 109180.

Almost surely, 2^2156570200 is an apocalyptic number.

2156570200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156570200 is an abundant number, since it is smaller than the sum of its proper divisors (2867896160).

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

2156570200 is a wasteful number, since it uses less digits than its factorization.

2156570200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22468 (or 22459 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2156570200 is about 46438.8867222288. The cubic root of 2156570200 is about 1291.9762589611.

The spelling of 2156570200 in words is "two billion, one hundred fifty-six million, five hundred seventy thousand, two hundred".