2156072908 has 24 divisors (see below), whose sum is σ = 4118897664. Its totient is φ = 979376400.

The previous prime is 2156072903. The next prime is 2156072921. The reversal of 2156072908 is 8092706512.

It is a super-2 number, since 2×2156072908² = 9297300769223152928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2156072903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53313 + ... + 84583.

It is an arithmetic number, because the mean of its divisors is an integer number (171620736).

Almost surely, 2^2156072908 is an apocalyptic number.

It is an amenable number.

2156072908 is a deficient number, since it is larger than the sum of its proper divisors (1962824756).

2156072908 is a wasteful number, since it uses less digits than its factorization.

2156072908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32853 (or 32851 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2156072908 is about 46433.5321508067. The cubic root of 2156072908 is about 1291.8769440321.

The spelling of 2156072908 in words is "two billion, one hundred fifty-six million, seventy-two thousand, nine hundred eight".