172309452 has 48 divisors (see below), whose sum is σ = 460212480. Its totient is φ = 49154112.

The previous prime is 172309451. The next prime is 172309453. The reversal of 172309452 is 254903271.

172309452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172309451) and next prime (172309453).

It is not an unprimeable number, because it can be changed into a prime (172309451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72499 + ... + 74837.

It is an arithmetic number, because the mean of its divisors is an integer number (9587760).

Almost surely, 2^172309452 is an apocalyptic number.

172309452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172309452 is an abundant number, since it is smaller than the sum of its proper divisors (287903028).

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

172309452 is a wasteful number, since it uses less digits than its factorization.

172309452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3228 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 172309452 is about 13126.6694938206. The cubic root of 172309452 is about 556.4630951924.

The spelling of 172309452 in words is "one hundred seventy-two million, three hundred nine thousand, four hundred fifty-two".