72800036 has 12 divisors (see below), whose sum is σ = 127496460. Its totient is φ = 36372480.

The previous prime is 72800033. The next prime is 72800087. The reversal of 72800036 is 63000827.

It can be written as a sum of positive squares in 2 ways, for example, as 45697600 + 27102436 = 6760^2 + 5206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72799978 and 72800014.

It is not an unprimeable number, because it can be changed into a prime (72800033) 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, 221 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (10624705).

Almost surely, 2^72800036 is an apocalyptic number.

It is an amenable number.

72800036 is a deficient number, since it is larger than the sum of its proper divisors (54696424).

72800036 is a wasteful number, since it uses less digits than its factorization.

72800036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774 (or 13772 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72800036 is about 8532.2937127129. The cubic root of 72800036 is about 417.5519645599.

The spelling of 72800036 in words is "seventy-two million, eight hundred thousand, thirty-six".