72870392 has 16 divisors (see below), whose sum is σ = 156150960. Its totient is φ = 31230144.

The previous prime is 72870373. The next prime is 72870397. The reversal of 72870392 is 29307827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72870397) 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, 650573 + ... + 650684.

It is an arithmetic number, because the mean of its divisors is an integer number (9759435).

Almost surely, 2^72870392 is an apocalyptic number.

It is an amenable number.

72870392 is an abundant number, since it is smaller than the sum of its proper divisors (83280568).

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

72870392 is a wasteful number, since it uses less digits than its factorization.

72870392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301270 (or 1301266 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 72870392 is about 8536.4156412396. The cubic root of 72870392 is about 417.6864325677.

The spelling of 72870392 in words is "seventy-two million, eight hundred seventy thousand, three hundred ninety-two".