86243572 has 6 divisors (see below), whose sum is σ = 150926258. Its totient is φ = 43121784.

The previous prime is 86243551. The next prime is 86243579. The reversal of 86243572 is 27534268.

It can be written as a sum of positive squares in only one way, i.e., 60902416 + 25341156 = 7804^2 + 5034^2 .

It is a super-2 number, since 2×86243572² = 14875907422638368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86243579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10780443 + ... + 10780450.

Almost surely, 2^86243572 is an apocalyptic number.

It is an amenable number.

86243572 is a deficient number, since it is larger than the sum of its proper divisors (64682686).

86243572 is a wasteful number, since it uses less digits than its factorization.

86243572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21560897 (or 21560895 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 86243572 is about 9286.7417321685. The cubic root of 86243572 is about 441.8168197351.

The spelling of 86243572 in words is "eighty-six million, two hundred forty-three thousand, five hundred seventy-two".