72470156 has 24 divisors (see below), whose sum is σ = 138647376. Its totient is φ = 32870720.

The previous prime is 72470147. The next prime is 72470183. The reversal of 72470156 is 65107427.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23030 + ... + 25986.

It is an arithmetic number, because the mean of its divisors is an integer number (5776974).

Almost surely, 2^72470156 is an apocalyptic number.

It is an amenable number.

72470156 is a deficient number, since it is larger than the sum of its proper divisors (66177220).

72470156 is a wasteful number, since it uses less digits than its factorization.

72470156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 72470156 is about 8512.9405025526. The cubic root of 72470156 is about 416.9203228469.

The spelling of 72470156 in words is "seventy-two million, four hundred seventy thousand, one hundred fifty-six".