213672172 has 12 divisors (see below), whose sum is σ = 427344400. Its totient is φ = 91573776.

The previous prime is 213672163. The next prime is 213672191. The reversal of 213672172 is 271276312.

213672172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

213672172 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815547 + ... + 3815602.

Almost surely, 2^213672172 is an apocalyptic number.

It is an amenable number.

213672172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213672172 is a wasteful number, since it uses less digits than its factorization.

213672172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631160 (or 7631158 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 213672172 is about 14617.5296134470. The cubic root of 213672172 is about 597.8368141210.

The spelling of 213672172 in words is "two hundred thirteen million, six hundred seventy-two thousand, one hundred seventy-two".