172572140 has 48 divisors (see below), whose sum is σ = 391523328. Its totient is φ = 63515904.

The previous prime is 172572137. The next prime is 172572161. The reversal of 172572140 is 41275271.

It is a super-2 number, since 2×172572140² = 59562287008359200, which contains 22 as substring.

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, 98714 + ... + 100446.

It is an arithmetic number, because the mean of its divisors is an integer number (8156736).

Almost surely, 2^172572140 is an apocalyptic number.

172572140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172572140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195761664).

172572140 is an abundant number, since it is smaller than the sum of its proper divisors (218951188).

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

172572140 is a wasteful number, since it uses less digits than its factorization.

172572140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 172572140 is about 13136.6715723580. The cubic root of 172572140 is about 556.7457300221.

The spelling of 172572140 in words is "one hundred seventy-two million, five hundred seventy-two thousand, one hundred forty".