80380980 has 36 divisors (see below), whose sum is σ = 243822852. Its totient is φ = 21434880.

The previous prime is 80380969. The next prime is 80380997. The reversal of 80380980 is 8908308.

It can be written as a sum of positive squares in 2 ways, for example, as 39087504 + 41293476 = 6252^2 + 6426^2 .

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

It is a super-2 number, since 2×80380980² = 12922203891520800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 223101 + ... + 223460.

It is an arithmetic number, because the mean of its divisors is an integer number (6772857).

Almost surely, 2^80380980 is an apocalyptic number.

It is an amenable number.

80380980 is an abundant number, since it is smaller than the sum of its proper divisors (163441872).

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

80380980 is a wasteful number, since it uses less digits than its factorization.

80380980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446576 (or 446571 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 80380980 is about 8965.5440437265. The cubic root of 80380980 is about 431.5698521884.

The spelling of 80380980 in words is "eighty million, three hundred eighty thousand, nine hundred eighty".