172347372 has 48 divisors (see below), whose sum is σ = 466260480. Its totient is φ = 54950544.

The previous prime is 172347367. The next prime is 172347391. The reversal of 172347372 is 273743271.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32208 + ... + 37175.

It is an arithmetic number, because the mean of its divisors is an integer number (9713760).

Almost surely, 2^172347372 is an apocalyptic number.

172347372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172347372 is an abundant number, since it is smaller than the sum of its proper divisors (293913108).

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

172347372 is a wasteful number, since it uses less digits than its factorization.

172347372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69419 (or 69411 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 172347372 is about 13128.1138020662. The cubic root of 172347372 is about 556.5039123242.

The spelling of 172347372 in words is "one hundred seventy-two million, three hundred forty-seven thousand, three hundred seventy-two".