72730154 has 32 divisors (see below), whose sum is σ = 130031616. Its totient is φ = 29853360.

The previous prime is 72730139. The next prime is 72730181. The reversal of 72730154 is 45103727.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43889 + ... + 45515.

It is an arithmetic number, because the mean of its divisors is an integer number (4063488).

Almost surely, 2^72730154 is an apocalyptic number.

72730154 is a deficient number, since it is larger than the sum of its proper divisors (57301462).

72730154 is a wasteful number, since it uses less digits than its factorization.

72730154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72730154 is about 8528.1975821389. The cubic root of 72730154 is about 417.4183166958.

The spelling of 72730154 in words is "seventy-two million, seven hundred thirty thousand, one hundred fifty-four".