72394018 has 16 divisors (see below), whose sum is σ = 113498496. Its totient is φ = 34566400.

The previous prime is 72394001. The next prime is 72394037. The reversal of 72394018 is 81049327.

It is a super-3 number, since 3×72394018³ (a number of 25 digits) contains 333 as substring.

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, 44418 + ... + 46018.

It is an arithmetic number, because the mean of its divisors is an integer number (7093656).

Almost surely, 2^72394018 is an apocalyptic number.

72394018 is a deficient number, since it is larger than the sum of its proper divisors (41104478).

72394018 is a wasteful number, since it uses less digits than its factorization.

72394018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 72394018 is about 8508.4674295669. The cubic root of 72394018 is about 416.7742645499.

The spelling of 72394018 in words is "seventy-two million, three hundred ninety-four thousand, eighteen".