72984836 has 6 divisors (see below), whose sum is σ = 127723470. Its totient is φ = 36492416.

The previous prime is 72984827. The next prime is 72984883. The reversal of 72984836 is 63848927.

It can be written as a sum of positive squares in only one way, i.e., 61465600 + 11519236 = 7840^2 + 3394^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9123101 + ... + 9123108.

It is an arithmetic number, because the mean of its divisors is an integer number (21287245).

Almost surely, 2^72984836 is an apocalyptic number.

It is an amenable number.

72984836 is a deficient number, since it is larger than the sum of its proper divisors (54738634).

72984836 is a wasteful number, since it uses less digits than its factorization.

72984836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18246213 (or 18246211 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 72984836 is about 8543.1162932504. The cubic root of 72984836 is about 417.9049790498.

The spelling of 72984836 in words is "seventy-two million, nine hundred eighty-four thousand, eight hundred thirty-six".