72776236 has 12 divisors (see below), whose sum is σ = 137155312. Its totient is φ = 33589008.

The previous prime is 72776203. The next prime is 72776239. The reversal of 72776236 is 63267727.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72776239) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 699720 + ... + 699823.

Almost surely, 2^72776236 is an apocalyptic number.

It is an amenable number.

72776236 is a deficient number, since it is larger than the sum of its proper divisors (64379076).

72776236 is a wasteful number, since it uses less digits than its factorization.

72776236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399560 (or 1399558 counting only the distinct ones).

The product of its digits is 148176, while the sum is 40.

The square root of 72776236 is about 8530.8988975371. The cubic root of 72776236 is about 417.5064571652.

The spelling of 72776236 in words is "seventy-two million, seven hundred seventy-six thousand, two hundred thirty-six".