86321880 has 48 divisors (see below), whose sum is σ = 280547280. Its totient is φ = 23019072.

The previous prime is 86321867. The next prime is 86321881. The reversal of 86321880 is 8812368.

86321880 is a `hidden beast` number, since 8 + 632 + 18 + 8 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86321881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119532 + ... + 120251.

It is an arithmetic number, because the mean of its divisors is an integer number (5844735).

Almost surely, 2^86321880 is an apocalyptic number.

It is an amenable number.

86321880 is an abundant number, since it is smaller than the sum of its proper divisors (194225400).

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

86321880 is a wasteful number, since it uses less digits than its factorization.

86321880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239800 (or 239793 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 86321880 is about 9290.9568936682. The cubic root of 86321880 is about 441.9505005207.

The spelling of 86321880 in words is "eighty-six million, three hundred twenty-one thousand, eight hundred eighty".