86820732 has 36 divisors (see below), whose sum is σ = 220396176. Its totient is φ = 28817280.

The previous prime is 86820707. The next prime is 86820733. The reversal of 86820732 is 23702868.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86820733) 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, 3673 + ... + 13679.

It is an arithmetic number, because the mean of its divisors is an integer number (6122116).

Almost surely, 2^86820732 is an apocalyptic number.

It is an amenable number.

86820732 is an abundant number, since it is smaller than the sum of its proper divisors (133575444).

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

86820732 is a wasteful number, since it uses less digits than its factorization.

86820732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10258 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 86820732 is about 9317.7643241284. The cubic root of 86820732 is about 442.8002061284.

The spelling of 86820732 in words is "eighty-six million, eight hundred twenty thousand, seven hundred thirty-two".