72383994 has 24 divisors (see below), whose sum is σ = 166058100. Its totient is φ = 22708608.

The previous prime is 72383981. The next prime is 72384001. The reversal of 72383994 is 49938327.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61074225 + 11309769 = 7815^2 + 3363^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117969 + ... + 118580.

Almost surely, 2^72383994 is an apocalyptic number.

72383994 is an abundant number, since it is smaller than the sum of its proper divisors (93674106).

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

72383994 is a wasteful number, since it uses less digits than its factorization.

72383994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236574 (or 236571 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 72383994 is about 8507.8783489187. The cubic root of 72383994 is about 416.7550275181.

The spelling of 72383994 in words is "seventy-two million, three hundred eighty-three thousand, nine hundred ninety-four".