72318026 has 32 divisors (see below), whose sum is σ = 124540416. Its totient is φ = 31174000.

The previous prime is 72318019. The next prime is 72318041. The reversal of 72318026 is 62081327.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72318026.

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, 65741 + ... + 66831.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 2^72318026 is an apocalyptic number.

72318026 is a deficient number, since it is larger than the sum of its proper divisors (52222390).

72318026 is a wasteful number, since it uses less digits than its factorization.

72318026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72318026 is about 8504.0005879586. Note that the first 3 decimals coincide. The cubic root of 72318026 is about 416.6283841806.

The spelling of 72318026 in words is "seventy-two million, three hundred eighteen thousand, twenty-six".