172472164 has 12 divisors (see below), whose sum is σ = 312234300. Its totient is φ = 83262368.

The previous prime is 172472149. The next prime is 172472171. The reversal of 172472164 is 461274271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 125440000 + 47032164 = 11200^2 + 6858^2 .

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, 743299 + ... + 743530.

It is an arithmetic number, because the mean of its divisors is an integer number (26019525).

Almost surely, 2^172472164 is an apocalyptic number.

It is an amenable number.

172472164 is a deficient number, since it is larger than the sum of its proper divisors (139762136).

172472164 is a wasteful number, since it uses less digits than its factorization.

172472164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486862 (or 1486860 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 172472164 is about 13132.8657954005. The cubic root of 172472164 is about 556.6381963200.

The spelling of 172472164 in words is "one hundred seventy-two million, four hundred seventy-two thousand, one hundred sixty-four".