72673918 has 16 divisors (see below), whose sum is σ = 111339360. Its totient is φ = 35564256.

The previous prime is 72673903. The next prime is 72673921. The reversal of 72673918 is 81937627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74671 + ... + 75637.

It is an arithmetic number, because the mean of its divisors is an integer number (6958710).

Almost surely, 2^72673918 is an apocalyptic number.

72673918 is a deficient number, since it is larger than the sum of its proper divisors (38665442).

72673918 is a wasteful number, since it uses less digits than its factorization.

72673918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 127008, while the sum is 43.

The square root of 72673918 is about 8524.8998821101. The cubic root of 72673918 is about 417.3107043420.

The spelling of 72673918 in words is "seventy-two million, six hundred seventy-three thousand, nine hundred eighteen".