72493418 has 16 divisors (see below), whose sum is σ = 110972160. Its totient is φ = 35507136.

The previous prime is 72493373. The next prime is 72493427. The reversal of 72493418 is 81439427.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38855 + ... + 40677.

It is an arithmetic number, because the mean of its divisors is an integer number (6935760).

Almost surely, 2^72493418 is an apocalyptic number.

72493418 is a deficient number, since it is larger than the sum of its proper divisors (38478742).

72493418 is a wasteful number, since it uses less digits than its factorization.

72493418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its digits is 48384, while the sum is 38.

The square root of 72493418 is about 8514.3066658419. The cubic root of 72493418 is about 416.9649267850.

The spelling of 72493418 in words is "seventy-two million, four hundred ninety-three thousand, four hundred eighteen".