172236164 has 6 divisors (see below), whose sum is σ = 301413294. Its totient is φ = 86118080.

The previous prime is 172236157. The next prime is 172236269. The reversal of 172236164 is 461632271.

It can be written as a sum of positive squares in only one way, i.e., 167909764 + 4326400 = 12958^2 + 2080^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 172236164.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21529517 + ... + 21529524.

It is an arithmetic number, because the mean of its divisors is an integer number (50235549).

Almost surely, 2^172236164 is an apocalyptic number.

It is an amenable number.

172236164 is a deficient number, since it is larger than the sum of its proper divisors (129177130).

172236164 is a wasteful number, since it uses less digits than its factorization.

172236164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43059045 (or 43059043 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 172236164 is about 13123.8776282012. The cubic root of 172236164 is about 556.3841909300.

The spelling of 172236164 in words is "one hundred seventy-two million, two hundred thirty-six thousand, one hundred sixty-four".