172806984 has 48 divisors (see below), whose sum is σ = 534880320. Its totient is φ = 49373280.

The previous prime is 172806979. The next prime is 172807009. The reversal of 172806984 is 489608271.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170932 + ... + 171939.

It is an arithmetic number, because the mean of its divisors is an integer number (11143340).

Almost surely, 2^172806984 is an apocalyptic number.

172806984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

172806984 is an abundant number, since it is smaller than the sum of its proper divisors (362073336).

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

172806984 is a wasteful number, since it uses less digits than its factorization.

172806984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342890 (or 342883 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 172806984 is about 13145.6070228803. The cubic root of 172806984 is about 556.9981638344.

The spelling of 172806984 in words is "one hundred seventy-two million, eight hundred six thousand, nine hundred eighty-four".