86123856 has 80 divisors (see below), whose sum is σ = 273843584. Its totient is φ = 22712832.

The previous prime is 86123833. The next prime is 86123857. The reversal of 86123856 is 65832168.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86123857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5491 + ... + 14226.

Almost surely, 2^86123856 is an apocalyptic number.

It is an amenable number.

86123856 is an abundant number, since it is smaller than the sum of its proper divisors (187719728).

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

86123856 is a wasteful number, since it uses less digits than its factorization.

86123856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19748 (or 19742 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 86123856 is about 9280.2939608614. The cubic root of 86123856 is about 441.6122942124.

The spelling of 86123856 in words is "eighty-six million, one hundred twenty-three thousand, eight hundred fifty-six".