72343863 has 24 divisors (see below), whose sum is σ = 108492800. Its totient is φ = 46403280.

The previous prime is 72343847. The next prime is 72343883. The reversal of 72343863 is 36834327.

It is not a de Polignac number, because 72343863 - 2⁴ = 72343847 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72343883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54870 + ... + 56172.

Almost surely, 2^72343863 is an apocalyptic number.

72343863 is a deficient number, since it is larger than the sum of its proper divisors (36148937).

72343863 is a wasteful number, since it uses less digits than its factorization.

72343863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1536 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 72343863 is about 8505.5195608499. The cubic root of 72343863 is about 416.6779944298.

The spelling of 72343863 in words is "seventy-two million, three hundred forty-three thousand, eight hundred sixty-three".