72144594 has 40 divisors (see below), whose sum is σ = 162165168. Its totient is φ = 23972760.

The previous prime is 72144587. The next prime is 72144613. The reversal of 72144594 is 49544127.

It is a happy number.

72144594 is a `hidden beast` number, since 7 + 21 + 44 + 594 = 666.

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 19 ways as a sum of consecutive naturals, for example, 79089 + ... + 79995.

Almost surely, 2^72144594 is an apocalyptic number.

72144594 is an abundant number, since it is smaller than the sum of its proper divisors (90020574).

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

72144594 is a wasteful number, since it uses less digits than its factorization.

72144594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1403 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 72144594 is about 8493.7973839738. The cubic root of 72144594 is about 416.2950669491.

The spelling of 72144594 in words is "seventy-two million, one hundred forty-four thousand, five hundred ninety-four".