72087592 has 8 divisors (see below), whose sum is σ = 135164250. Its totient is φ = 36043792.

The previous prime is 72087571. The next prime is 72087593. The reversal of 72087592 is 29578027.

It can be written as a sum of positive squares in only one way, i.e., 41550916 + 30536676 = 6446^2 + 5526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72087593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4505467 + ... + 4505482.

Almost surely, 2^72087592 is an apocalyptic number.

It is an amenable number.

72087592 is a deficient number, since it is larger than the sum of its proper divisors (63076658).

72087592 is a wasteful number, since it uses less digits than its factorization.

72087592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010955 (or 9010951 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 72087592 is about 8490.4412135059. The cubic root of 72087592 is about 416.1853987467.

The spelling of 72087592 in words is "seventy-two million, eighty-seven thousand, five hundred ninety-two".