172990992 has 40 divisors (see below), whose sum is σ = 449256960. Its totient is φ = 57358720.

The previous prime is 172990949. The next prime is 172991011. The reversal of 172990992 is 299099271.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 267 + ... + 18602.

It is an arithmetic number, because the mean of its divisors is an integer number (11231424).

Almost surely, 2^172990992 is an apocalyptic number.

172990992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172990992 is an abundant number, since it is smaller than the sum of its proper divisors (276265968).

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

172990992 is a wasteful number, since it uses less digits than its factorization.

172990992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19071 (or 19065 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 172990992 is about 13152.6040007293. The cubic root of 172990992 is about 557.1957942750.

The spelling of 172990992 in words is "one hundred seventy-two million, nine hundred ninety thousand, nine hundred ninety-two".