172040472 has 24 divisors (see below), whose sum is σ = 465943140. Its totient is φ = 57346800.

The previous prime is 172040431. The next prime is 172040507. The reversal of 172040472 is 274040271.

It is a happy number.

172040472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1194654 + ... + 1194797.

Almost surely, 2^172040472 is an apocalyptic number.

172040472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172040472 is an abundant number, since it is smaller than the sum of its proper divisors (293902668).

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

172040472 is a wasteful number, since it uses less digits than its factorization.

172040472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389463 (or 2389456 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 172040472 is about 13116.4199383826. The cubic root of 172040472 is about 556.1733927746.

The spelling of 172040472 in words is "one hundred seventy-two million, forty thousand, four hundred seventy-two".