72191596 has 12 divisors (see below), whose sum is σ = 127245160. Its totient is φ = 35835840.

The previous prime is 72191579. The next prime is 72191597. The reversal of 72191596 is 69519127.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72191597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64365 + ... + 65476.

Almost surely, 2^72191596 is an apocalyptic number.

It is an amenable number.

72191596 is a deficient number, since it is larger than the sum of its proper divisors (55053564).

72191596 is a wasteful number, since it uses less digits than its factorization.

72191596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129984 (or 129982 counting only the distinct ones).

The product of its digits is 34020, while the sum is 40.

The square root of 72191596 is about 8496.5637760215. The cubic root of 72191596 is about 416.3854523449.

The spelling of 72191596 in words is "seventy-two million, one hundred ninety-one thousand, five hundred ninety-six".