86167820 has 24 divisors (see below), whose sum is σ = 185844624. Its totient is φ = 33535296.

The previous prime is 86167799. The next prime is 86167841. The reversal of 86167820 is 2876168.

It is an interprime number because it is at equal distance from previous prime (86167799) and next prime (86167841).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 57482 + ... + 58961.

It is an arithmetic number, because the mean of its divisors is an integer number (7743526).

Almost surely, 2^86167820 is an apocalyptic number.

It is an amenable number.

86167820 is an abundant number, since it is smaller than the sum of its proper divisors (99676804).

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

86167820 is a wasteful number, since it uses less digits than its factorization.

86167820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116489 (or 116487 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 86167820 is about 9282.6623336196. The cubic root of 86167820 is about 441.6874253128.

The spelling of 86167820 in words is "eighty-six million, one hundred sixty-seven thousand, eight hundred twenty".