72156016 has 20 divisors (see below), whose sum is σ = 141189624. Its totient is φ = 35720000.

The previous prime is 72156013. The next prime is 72156017. The reversal of 72156016 is 61065127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20710 + ... + 23941.

Almost surely, 2^72156016 is an apocalyptic number.

It is an amenable number.

72156016 is a deficient number, since it is larger than the sum of its proper divisors (69033608).

72156016 is a wasteful number, since it uses less digits than its factorization.

72156016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44760 (or 44754 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 72156016 is about 8494.4697303599. The cubic root of 72156016 is about 416.3170351986.

It can be divided in two parts, 7215 and 6016, that added together give a palindrome (13231).

The spelling of 72156016 in words is "seventy-two million, one hundred fifty-six thousand, sixteen".