172929120 has 384 divisors, whose sum is σ = 694987776. Its totient is φ = 35168256.

The previous prime is 172929041. The next prime is 172929143. The reversal of 172929120 is 21929271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1616107 + ... + 1616213.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^172929120 is an apocalyptic number.

172929120 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 172929120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347493888).

172929120 is an abundant number, since it is smaller than the sum of its proper divisors (522058656).

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

172929120 is a wasteful number, since it uses less digits than its factorization.

172929120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 172929120 is about 13150.2517086176. The cubic root of 172929120 is about 557.1293574263.

The spelling of 172929120 in words is "one hundred seventy-two million, nine hundred twenty-nine thousand, one hundred twenty".