172864680 has 96 divisors (see below), whose sum is σ = 536220000. Its totient is φ = 44580480.

The previous prime is 172864673. The next prime is 172864691. The reversal of 172864680 is 86468271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114571 + ... + 116069.

It is an arithmetic number, because the mean of its divisors is an integer number (5585625).

Almost surely, 2^172864680 is an apocalyptic number.

172864680 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 172864680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268110000).

172864680 is an abundant number, since it is smaller than the sum of its proper divisors (363355320).

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

172864680 is a wasteful number, since it uses less digits than its factorization.

172864680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 172864680 is about 13147.8013371058. The cubic root of 172864680 is about 557.0601462640.

The spelling of 172864680 in words is "one hundred seventy-two million, eight hundred sixty-four thousand, six hundred eighty".