72159922 has 8 divisors (see below), whose sum is σ = 108297072. Its totient is φ = 36060900.

The previous prime is 72159887. The next prime is 72159931. The reversal of 72159922 is 22995127.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4204 + ... + 12727.

It is an arithmetic number, because the mean of its divisors is an integer number (13537134).

Almost surely, 2^72159922 is an apocalyptic number.

72159922 is a deficient number, since it is larger than the sum of its proper divisors (36137150).

72159922 is a wasteful number, since it uses less digits than its factorization.

72159922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19064.

The product of its digits is 22680, while the sum is 37.

The square root of 72159922 is about 8494.6996415412. The cubic root of 72159922 is about 416.3245471849.

The spelling of 72159922 in words is "seventy-two million, one hundred fifty-nine thousand, nine hundred twenty-two".