172940980 has 24 divisors (see below), whose sum is σ = 366041088. Its totient is φ = 68630688.

The previous prime is 172940959. The next prime is 172941001. The reversal of 172940980 is 89049271.

It is an interprime number because it is at equal distance from previous prime (172940959) and next prime (172941001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31504 + ... + 36583.

It is an arithmetic number, because the mean of its divisors is an integer number (15251712).

Almost surely, 2^172940980 is an apocalyptic number.

172940980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172940980 is an abundant number, since it is smaller than the sum of its proper divisors (193100108).

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

172940980 is a wasteful number, since it uses less digits than its factorization.

172940980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68223 (or 68221 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 172940980 is about 13150.7026428248. The cubic root of 172940980 is about 557.1420936717.

The spelling of 172940980 in words is "one hundred seventy-two million, nine hundred forty thousand, nine hundred eighty".