86831712 has 72 divisors (see below), whose sum is σ = 269385480. Its totient is φ = 26311680.

The previous prime is 86831707. The next prime is 86831737. The reversal of 86831712 is 21713868.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10537 + ... + 16872.

It is an arithmetic number, because the mean of its divisors is an integer number (3741465).

Almost surely, 2^86831712 is an apocalyptic number.

It is an amenable number.

86831712 is an abundant number, since it is smaller than the sum of its proper divisors (182553768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86831712 is a wasteful number, since it uses less digits than its factorization.

86831712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27436 (or 27425 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 86831712 is about 9318.3535026312. The cubic root of 86831712 is about 442.8188719517.

The spelling of 86831712 in words is "eighty-six million, eight hundred thirty-one thousand, seven hundred twelve".