172173984 has 24 divisors (see below), whose sum is σ = 451956960. Its totient is φ = 57391296.

The previous prime is 172173979. The next prime is 172173997. The reversal of 172173984 is 489371271.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896644 + ... + 896835.

It is an arithmetic number, because the mean of its divisors is an integer number (18831540).

Almost surely, 2^172173984 is an apocalyptic number.

It is an amenable number.

172173984 is an abundant number, since it is smaller than the sum of its proper divisors (279782976).

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

172173984 is a wasteful number, since it uses less digits than its factorization.

172173984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793492 (or 1793484 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 172173984 is about 13121.5084498696. The cubic root of 172173984 is about 556.3172283513.

The spelling of 172173984 in words is "one hundred seventy-two million, one hundred seventy-three thousand, nine hundred eighty-four".