86837988 has 12 divisors (see below), whose sum is σ = 202622000. Its totient is φ = 28945992.

The previous prime is 86837981. The next prime is 86838007. The reversal of 86837988 is 88973868.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (86837981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618238 + ... + 3618261.

Almost surely, 2^86837988 is an apocalyptic number.

It is an amenable number.

86837988 is an abundant number, since it is smaller than the sum of its proper divisors (115784012).

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

86837988 is a wasteful number, since it uses less digits than its factorization.

86837988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236506 (or 7236504 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The square root of 86837988 is about 9318.6902513175. The cubic root of 86837988 is about 442.8295403439.

The spelling of 86837988 in words is "eighty-six million, eight hundred thirty-seven thousand, nine hundred eighty-eight".