172072036 has 12 divisors (see below), whose sum is σ = 302199660. Its totient is φ = 85729280.

The previous prime is 172072027. The next prime is 172072049. The reversal of 172072036 is 630270271.

It can be written as a sum of positive squares in 2 ways, for example, as 131239936 + 40832100 = 11456^2 + 6390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172071995 and 172072013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75421 + ... + 77668.

It is an arithmetic number, because the mean of its divisors is an integer number (25183305).

Almost surely, 2^172072036 is an apocalyptic number.

It is an amenable number.

172072036 is a deficient number, since it is larger than the sum of its proper divisors (130127624).

172072036 is a wasteful number, since it uses less digits than its factorization.

172072036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153374 (or 153372 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 172072036 is about 13117.6231078652. The cubic root of 172072036 is about 556.2074041194.

The spelling of 172072036 in words is "one hundred seventy-two million, seventy-two thousand, thirty-six".