72323766 has 40 divisors (see below), whose sum is σ = 170595480. Its totient is φ = 22838112.

The previous prime is 72323759. The next prime is 72323773. The reversal of 72323766 is 66732327.

It is an interprime number because it is at equal distance from previous prime (72323759) and next prime (72323773).

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 72323766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8671 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (4264887).

Almost surely, 2^72323766 is an apocalyptic number.

72323766 is an abundant number, since it is smaller than the sum of its proper divisors (98271714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72323766 is a wasteful number, since it uses less digits than its factorization.

72323766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23530 (or 23521 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 72323766 is about 8504.3380694796. The cubic root of 72323766 is about 416.6394067144.

The spelling of 72323766 in words is "seventy-two million, three hundred twenty-three thousand, seven hundred sixty-six".