86431828 has 24 divisors (see below), whose sum is σ = 173178432. Its totient is φ = 36974784.

The previous prime is 86431819. The next prime is 86431831. The reversal of 86431828 is 82813468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14775 + ... + 19777.

It is an arithmetic number, because the mean of its divisors is an integer number (7215768).

Almost surely, 2^86431828 is an apocalyptic number.

It is an amenable number.

86431828 is an abundant number, since it is smaller than the sum of its proper divisors (86746604).

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

86431828 is a wasteful number, since it uses less digits than its factorization.

86431828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631 (or 5629 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 86431828 is about 9296.8719470583. The cubic root of 86431828 is about 442.1380580588.

The spelling of 86431828 in words is "eighty-six million, four hundred thirty-one thousand, eight hundred twenty-eight".