172989480 has 32 divisors (see below), whose sum is σ = 518968800. Its totient is φ = 46130496.

The previous prime is 172989461. The next prime is 172989497. The reversal of 172989480 is 84989271.

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 7 ways as a sum of consecutive naturals, for example, 720670 + ... + 720909.

It is an arithmetic number, because the mean of its divisors is an integer number (16217775).

Almost surely, 2^172989480 is an apocalyptic number.

172989480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172989480 is an abundant number, since it is smaller than the sum of its proper divisors (345979320).

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

172989480 is a wasteful number, since it uses less digits than its factorization.

172989480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441593 (or 1441589 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 172989480 is about 13152.5465214916. The cubic root of 172989480 is about 557.1941709101.

The spelling of 172989480 in words is "one hundred seventy-two million, nine hundred eighty-nine thousand, four hundred eighty".