86144856 has 32 divisors (see below), whose sum is σ = 246128640. Its totient is φ = 24612768.

The previous prime is 86144837. The next prime is 86144869. The reversal of 86144856 is 65844168.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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, 256216 + ... + 256551.

It is an arithmetic number, because the mean of its divisors is an integer number (7691520).

Almost surely, 2^86144856 is an apocalyptic number.

It is an amenable number.

86144856 is an abundant number, since it is smaller than the sum of its proper divisors (159983784).

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

86144856 is a wasteful number, since it uses less digits than its factorization.

86144856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512783 (or 512779 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 86144856 is about 9281.4253215764. The cubic root of 86144856 is about 441.6481847889.

The spelling of 86144856 in words is "eighty-six million, one hundred forty-four thousand, eight hundred fifty-six".