72069156 has 48 divisors (see below), whose sum is σ = 188724480. Its totient is φ = 23781600.

The previous prime is 72069139. The next prime is 72069163. The reversal of 72069156 is 65196027.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 72069156.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7605 + ... + 14211.

It is an arithmetic number, because the mean of its divisors is an integer number (3931760).

Almost surely, 2^72069156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72069156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94362240).

72069156 is an abundant number, since it is smaller than the sum of its proper divisors (116655324).

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

72069156 is a wasteful number, since it uses less digits than its factorization.

72069156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 72069156 is about 8489.3554525653. The cubic root of 72069156 is about 416.1499166894.

The spelling of 72069156 in words is "seventy-two million, sixty-nine thousand, one hundred fifty-six".