172340472 has 32 divisors (see below), whose sum is σ = 449585280. Its totient is φ = 54948960.

The previous prime is 172340459. The next prime is 172340473. The reversal of 172340472 is 274043271.

172340472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172340473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155554 + ... + 156657.

It is an arithmetic number, because the mean of its divisors is an integer number (14049540).

Almost surely, 2^172340472 is an apocalyptic number.

172340472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172340472 is an abundant number, since it is smaller than the sum of its proper divisors (277244808).

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

172340472 is a wasteful number, since it uses less digits than its factorization.

172340472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312243 (or 312239 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 172340472 is about 13127.8510046390. The cubic root of 172340472 is about 556.4964856018.

It can be divided in two parts, 1723 and 40472, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 172340472 in words is "one hundred seventy-two million, three hundred forty thousand, four hundred seventy-two".