172904233320 has 384 divisors, whose sum is σ = 692289561600. Its totient is φ = 36445427712.

The previous prime is 172904233297. The next prime is 172904233351. The reversal of 172904233320 is 23332409271.

172904233320 is a `hidden beast` number, since 1 + 7 + 290 + 42 + 3 + 3 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46615626 + ... + 46619334.

It is an arithmetic number, because the mean of its divisors is an integer number (1802837400).

Almost surely, 2^172904233320 is an apocalyptic number.

172904233320 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 172904233320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346144780800).

172904233320 is an abundant number, since it is smaller than the sum of its proper divisors (519385328280).

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

172904233320 is a wasteful number, since it uses less digits than its factorization.

172904233320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169 (or 5162 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 172904233320 in words is "one hundred seventy-two billion, nine hundred four million, two hundred thirty-three thousand, three hundred twenty".