73988172 has 36 divisors (see below), whose sum is σ = 187385016. Its totient is φ = 24615360.

The previous prime is 73988141. The next prime is 73988179. The reversal of 73988172 is 27188937.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (73988179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20547 + ... + 23877.

Almost surely, 2^73988172 is an apocalyptic number.

It is an amenable number.

73988172 is an abundant number, since it is smaller than the sum of its proper divisors (113396844).

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

73988172 is a wasteful number, since it uses less digits than its factorization.

73988172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958 (or 3953 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 73988172 is about 8601.6377510332. The cubic root of 73988172 is about 419.8112757549.

The spelling of 73988172 in words is "seventy-three million, nine hundred eighty-eight thousand, one hundred seventy-two".