86204988 has 36 divisors (see below), whose sum is σ = 219845808. Its totient is φ = 28479360.

The previous prime is 86204983. The next prime is 86204999. The reversal of 86204988 is 88940268.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86204983) 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, 6528 + ... + 14663.

It is an arithmetic number, because the mean of its divisors is an integer number (6106828).

Almost surely, 2^86204988 is an apocalyptic number.

It is an amenable number.

86204988 is an abundant number, since it is smaller than the sum of its proper divisors (133640820).

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

86204988 is a wasteful number, since it uses less digits than its factorization.

86204988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314 (or 21309 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 86204988 is about 9284.6641296280. The cubic root of 86204988 is about 441.7509226385.

The spelling of 86204988 in words is "eighty-six million, two hundred four thousand, nine hundred eighty-eight".