72199974 has 48 divisors (see below), whose sum is σ = 181407744. Its totient is φ = 18751920.

The previous prime is 72199973. The next prime is 72199991. The reversal of 72199974 is 47999127.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72199973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2022 + ... + 12185.

It is an arithmetic number, because the mean of its divisors is an integer number (3779328).

Almost surely, 2^72199974 is an apocalyptic number.

72199974 is an abundant number, since it is smaller than the sum of its proper divisors (109207770).

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

72199974 is a wasteful number, since it uses less digits than its factorization.

72199974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14241 (or 14230 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 72199974 is about 8497.0567845578. The cubic root of 72199974 is about 416.4015592168.

The spelling of 72199974 in words is "seventy-two million, one hundred ninety-nine thousand, nine hundred seventy-four".