72018016 has 24 divisors (see below), whose sum is σ = 162041040. Its totient is φ = 30864768.

The previous prime is 72018007. The next prime is 72018019. The reversal of 72018016 is 61081027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72018019) 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, 160531 + ... + 160978.

It is an arithmetic number, because the mean of its divisors is an integer number (6751710).

Almost surely, 2^72018016 is an apocalyptic number.

It is an amenable number.

72018016 is an abundant number, since it is smaller than the sum of its proper divisors (90023024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72018016 is a wasteful number, since it uses less digits than its factorization.

72018016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321526 (or 321518 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 72018016 is about 8486.3429108185. The cubic root of 72018016 is about 416.0514605964.

The spelling of 72018016 in words is "seventy-two million, eighteen thousand, sixteen".