2170512972 has 36 divisors (see below), whose sum is σ = 5568469816. Its totient is φ = 712704960.

The previous prime is 2170512959. The next prime is 2170512991. The reversal of 2170512972 is 2792150712.

2170512972 is a `hidden beast` number, since 2 + 1 + 70 + 512 + 9 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2170512972² = 9422253123240545568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 447529 + ... + 452352.

Almost surely, 2^2170512972 is an apocalyptic number.

It is an amenable number.

2170512972 is an abundant number, since it is smaller than the sum of its proper divisors (3397956844).

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

2170512972 is a wasteful number, since it uses less digits than its factorization.

2170512972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899958 (or 899953 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 2170512972 is about 46588.7644395084. The cubic root of 2170512972 is about 1294.7545977850.

The spelling of 2170512972 in words is "two billion, one hundred seventy million, five hundred twelve thousand, nine hundred seventy-two".