72980036 has 6 divisors (see below), whose sum is σ = 127715070. Its totient is φ = 36490016.

The previous prime is 72980023. The next prime is 72980053. The reversal of 72980036 is 63008927.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 1577536 = 8450^2 + 1256^2 .

It is a super-2 number, since 2×72980036² = 10652171309122592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72979978 and 72980005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122501 + ... + 9122508.

It is an arithmetic number, because the mean of its divisors is an integer number (21285845).

Almost surely, 2^72980036 is an apocalyptic number.

It is an amenable number.

72980036 is a deficient number, since it is larger than the sum of its proper divisors (54735034).

72980036 is a wasteful number, since it uses less digits than its factorization.

72980036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18245013 (or 18245011 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 72980036 is about 8542.8353606985. The cubic root of 72980036 is about 417.8958173847.

The spelling of 72980036 in words is "seventy-two million, nine hundred eighty thousand, thirty-six".