72156596 has 6 divisors (see below), whose sum is σ = 126274050. Its totient is φ = 36078296.

The previous prime is 72156593. The next prime is 72156599. The reversal of 72156596 is 69565127.

It is an interprime number because it is at equal distance from previous prime (72156593) and next prime (72156599).

It can be written as a sum of positive squares in only one way, i.e., 72012196 + 144400 = 8486^2 + 380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156593) by changing a digit.

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 as a sum of consecutive naturals, namely, 9019571 + ... + 9019578.

It is an arithmetic number, because the mean of its divisors is an integer number (21045675).

Almost surely, 2^72156596 is an apocalyptic number.

It is an amenable number.

72156596 is a deficient number, since it is larger than the sum of its proper divisors (54117454).

72156596 is a wasteful number, since it uses less digits than its factorization.

72156596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18039153 (or 18039151 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 72156596 is about 8494.5038701504. The cubic root of 72156596 is about 416.3181506669.

The spelling of 72156596 in words is "seventy-two million, one hundred fifty-six thousand, five hundred ninety-six".