86980320 has 144 divisors (see below), whose sum is σ = 339262560. Its totient is φ = 19878912.

The previous prime is 86980297. The next prime is 86980321. The reversal of 86980320 is 2308968.

It is a tau number, because it is divible by the number of its divisors (144).

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 (86980321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5766 + ... + 14394.

It is an arithmetic number, because the mean of its divisors is an integer number (2355990).

Almost surely, 2^86980320 is an apocalyptic number.

86980320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86980320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169631280).

86980320 is an abundant number, since it is smaller than the sum of its proper divisors (252282240).

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

86980320 is a wasteful number, since it uses less digits than its factorization.

86980320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8657 (or 8646 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 86980320 is about 9326.3240346881. The cubic root of 86980320 is about 443.0713485321.

The spelling of 86980320 in words is "eighty-six million, nine hundred eighty thousand, three hundred twenty".