2156089700 has 36 divisors (see below), whose sum is σ = 4714458672. Its totient is φ = 855847200.

The previous prime is 2156089699. The next prime is 2156089721. The reversal of 2156089700 is 79806512.

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, 69194 + ... + 95393.

Almost surely, 2^2156089700 is an apocalyptic number.

2156089700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156089700 is an abundant number, since it is smaller than the sum of its proper divisors (2558368972).

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

2156089700 is a wasteful number, since it uses less digits than its factorization.

2156089700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164732 (or 164725 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2156089700 is about 46433.7129680580. The cubic root of 2156089700 is about 1291.8802978367.

The spelling of 2156089700 in words is "two billion, one hundred fifty-six million, eighty-nine thousand, seven hundred".