172473232 has 10 divisors (see below), whose sum is σ = 334166918. Its totient is φ = 86236608.

The previous prime is 172473157. The next prime is 172473233. The reversal of 172473232 is 232374271.

172473232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 165482496 + 6990736 = 12864^2 + 2644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172473194 and 172473203.

It is not an unprimeable number, because it can be changed into a prime (172473233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5389773 + ... + 5389804.

Almost surely, 2^172473232 is an apocalyptic number.

It is an amenable number.

172473232 is a deficient number, since it is larger than the sum of its proper divisors (161693686).

172473232 is a wasteful number, since it uses less digits than its factorization.

172473232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779585 (or 10779579 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 172473232 is about 13132.9064566835. The cubic root of 172473232 is about 556.6393452752.

The spelling of 172473232 in words is "one hundred seventy-two million, four hundred seventy-three thousand, two hundred thirty-two".