86157812 has 24 divisors (see below), whose sum is σ = 164605896. Its totient is φ = 39218688.

The previous prime is 86157809. The next prime is 86157817. The reversal of 86157812 is 21875168.

It can be written as a sum of positive squares in 4 ways, for example, as 1628176 + 84529636 = 1276^2 + 9194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86157817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7553 + ... + 15144.

It is an arithmetic number, because the mean of its divisors is an integer number (6858579).

Almost surely, 2^86157812 is an apocalyptic number.

It is an amenable number.

86157812 is a deficient number, since it is larger than the sum of its proper divisors (78448084).

86157812 is a wasteful number, since it uses less digits than its factorization.

86157812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22787 (or 22785 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 86157812 is about 9282.1232484815. The cubic root of 86157812 is about 441.6703246562.

The spelling of 86157812 in words is "eighty-six million, one hundred fifty-seven thousand, eight hundred twelve".