80982180 has 144 divisors (see below), whose sum is σ = 268457280. Its totient is φ = 20435328.

The previous prime is 80982157. The next prime is 80982191. The reversal of 80982180 is 8128908.

It is a super-2 number, since 2×80982180² = 13116226955104800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91902 + ... + 92778.

Almost surely, 2^80982180 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80982180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134228640).

80982180 is an abundant number, since it is smaller than the sum of its proper divisors (187475100).

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

80982180 is a wasteful number, since it uses less digits than its factorization.

80982180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 80982180 is about 8999.0099455440. The cubic root of 80982180 is about 432.6431392746.

The spelling of 80982180 in words is "eighty million, nine hundred eighty-two thousand, one hundred eighty".