72156934 has 8 divisors (see below), whose sum is σ = 112941360. Its totient is φ = 34509816.

The previous prime is 72156913. The next prime is 72156947. The reversal of 72156934 is 43965127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72156893 and 72156902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784269 + ... + 784360.

It is an arithmetic number, because the mean of its divisors is an integer number (14117670).

Almost surely, 2^72156934 is an apocalyptic number.

72156934 is a deficient number, since it is larger than the sum of its proper divisors (40784426).

72156934 is a wasteful number, since it uses less digits than its factorization.

72156934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568654.

The product of its digits is 45360, while the sum is 37.

The square root of 72156934 is about 8494.5237653444. The cubic root of 72156934 is about 416.3188007129.

The spelling of 72156934 in words is "seventy-two million, one hundred fifty-six thousand, nine hundred thirty-four".