72918146 has 16 divisors (see below), whose sum is σ = 126173376. Its totient is φ = 30957936.

The previous prime is 72918133. The next prime is 72918161. The reversal of 72918146 is 64181927.

It is a Curzon 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, 22841 + ... + 25836.

It is an arithmetic number, because the mean of its divisors is an integer number (7885836).

Almost surely, 2^72918146 is an apocalyptic number.

72918146 is a deficient number, since it is larger than the sum of its proper divisors (53255230).

72918146 is a wasteful number, since it uses less digits than its factorization.

72918146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48793.

The product of its digits is 24192, while the sum is 38.

The square root of 72918146 is about 8539.2122587508. The cubic root of 72918146 is about 417.7776531665. Note that the first 3 decimals are identical.

The spelling of 72918146 in words is "seventy-two million, nine hundred eighteen thousand, one hundred forty-six".