72013036 has 6 divisors (see below), whose sum is σ = 126022820. Its totient is φ = 36006516.

The previous prime is 72012991. The next prime is 72013043. The reversal of 72013036 is 63031027.

It is a junction number, because it is equal to n+sod(n) for n = 72012998 and 72013016.

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 as a sum of consecutive naturals, namely, 9001626 + ... + 9001633.

Almost surely, 2^72013036 is an apocalyptic number.

It is an amenable number.

72013036 is a deficient number, since it is larger than the sum of its proper divisors (54009784).

72013036 is a wasteful number, since it uses less digits than its factorization.

72013036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18003263 (or 18003261 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 72013036 is about 8486.0494931387. The cubic root of 72013036 is about 416.0418704774.

Subtracting from 72013036 its reverse (63031027), we obtain a square (8982009 = 2997²).

The spelling of 72013036 in words is "seventy-two million, thirteen thousand, thirty-six".