72070392 has 16 divisors (see below), whose sum is σ = 180176040. Its totient is φ = 24023456.

The previous prime is 72070391. The next prime is 72070393. The reversal of 72070392 is 29307027.

It is an interprime number because it is at equal distance from previous prime (72070391) and next prime (72070393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070391) 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, 1501443 + ... + 1501490.

Almost surely, 2^72070392 is an apocalyptic number.

It is an amenable number.

72070392 is an abundant number, since it is smaller than the sum of its proper divisors (108105648).

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

72070392 is a wasteful number, since it uses less digits than its factorization.

72070392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002942 (or 3002938 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 72070392 is about 8489.4282492992. The cubic root of 72070392 is about 416.1522956931.

The spelling of 72070392 in words is "seventy-two million, seventy thousand, three hundred ninety-two".