72733554 has 24 divisors (see below), whose sum is σ = 161255952. Its totient is φ = 23680440.

The previous prime is 72733541. The next prime is 72733561. The reversal of 72733554 is 45533727.

72733554 is a `hidden beast` number, since 72 + 7 + 33 + 554 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46212 + ... + 47759.

It is an arithmetic number, because the mean of its divisors is an integer number (6718998).

Almost surely, 2^72733554 is an apocalyptic number.

72733554 is an abundant number, since it is smaller than the sum of its proper divisors (88522398).

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

72733554 is a wasteful number, since it uses less digits than its factorization.

72733554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94022 (or 94019 counting only the distinct ones).

The product of its digits is 88200, while the sum is 36.

The square root of 72733554 is about 8528.3969185305. The cubic root of 72733554 is about 417.4248211055.

The spelling of 72733554 in words is "seventy-two million, seven hundred thirty-three thousand, five hundred fifty-four".