172326980 has 24 divisors (see below), whose sum is σ = 413585088. Its totient is φ = 59083488.

The previous prime is 172326953. The next prime is 172326983. The reversal of 172326980 is 89623271.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (172326983) 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, 615314 + ... + 615593.

It is an arithmetic number, because the mean of its divisors is an integer number (17232712).

Almost surely, 2^172326980 is an apocalyptic number.

172326980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172326980 is an abundant number, since it is smaller than the sum of its proper divisors (241258108).

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

172326980 is a wasteful number, since it uses less digits than its factorization.

172326980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230923 (or 1230921 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 172326980 is about 13127.3371252513. The cubic root of 172326980 is about 556.4819630960.

The spelling of 172326980 in words is "one hundred seventy-two million, three hundred twenty-six thousand, nine hundred eighty".