72087086 has 4 divisors (see below), whose sum is σ = 108130632. Its totient is φ = 36043542.

The previous prime is 72087079. The next prime is 72087091. The reversal of 72087086 is 68078027.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18021770 + ... + 18021773.

It is an arithmetic number, because the mean of its divisors is an integer number (27032658).

Almost surely, 2^72087086 is an apocalyptic number.

72087086 is a deficient number, since it is larger than the sum of its proper divisors (36043546).

72087086 is a wasteful number, since it uses less digits than its factorization.

72087086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36043545.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 72087086 is about 8490.4114152378. The cubic root of 72087086 is about 416.1844249762.

The spelling of 72087086 in words is "seventy-two million, eighty-seven thousand, eighty-six".