72072116 has 6 divisors (see below), whose sum is σ = 126126210. Its totient is φ = 36036056.

The previous prime is 72072107. The next prime is 72072127. The reversal of 72072116 is 61127027.

It can be written as a sum of positive squares in only one way, i.e., 36120100 + 35952016 = 6010^2 + 5996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9009011 + ... + 9009018.

It is an arithmetic number, because the mean of its divisors is an integer number (21021035).

Almost surely, 2^72072116 is an apocalyptic number.

It is an amenable number.

72072116 is a deficient number, since it is larger than the sum of its proper divisors (54054094).

72072116 is a wasteful number, since it uses less digits than its factorization.

72072116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18018033 (or 18018031 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 72072116 is about 8489.5297867432. The cubic root of 72072116 is about 416.1556139343.

The spelling of 72072116 in words is "seventy-two million, seventy-two thousand, one hundred sixteen".