72803938 has 16 divisors (see below), whose sum is σ = 112412664. Its totient is φ = 35337600.

The previous prime is 72803921. The next prime is 72803957. The reversal of 72803938 is 83930827.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67125249 + 5678689 = 8193^2 + 2383^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72803938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43656 + ... + 45292.

Almost surely, 2^72803938 is an apocalyptic number.

72803938 is a deficient number, since it is larger than the sum of its proper divisors (39608726).

72803938 is a wasteful number, since it uses less digits than its factorization.

72803938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 72803938 is about 8532.5223703193. The cubic root of 72803938 is about 417.5594245318.

The spelling of 72803938 in words is "seventy-two million, eight hundred three thousand, nine hundred thirty-eight".