172715984 has 30 divisors (see below), whose sum is σ = 389273634. Its totient is φ = 74020800.

The previous prime is 172715957. The next prime is 172715987. The reversal of 172715984 is 489517271.

It can be written as a sum of positive squares in only one way, i.e., 159466384 + 13249600 = 12628^2 + 3640^2 .

It is a super-2 number, since 2×172715984² = 59661622258176512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172715987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109367 + ... + 110934.

Almost surely, 2^172715984 is an apocalyptic number.

172715984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

172715984 is an abundant number, since it is smaller than the sum of its proper divisors (216557650).

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

172715984 is a wasteful number, since it uses less digits than its factorization.

172715984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220323 (or 220310 counting only the distinct ones).

The product of its digits is 141120, while the sum is 44.

The square root of 172715984 is about 13142.1453347617. The cubic root of 172715984 is about 556.9003750924.

The spelling of 172715984 in words is "one hundred seventy-two million, seven hundred fifteen thousand, nine hundred eighty-four".