80580780 has 144 divisors (see below), whose sum is σ = 288497664. Its totient is φ = 17815680.

The previous prime is 80580779. The next prime is 80580791. The reversal of 80580780 is 8708508.

80580780 is a `hidden beast` number, since 8 + 0 + 580 + 78 + 0 = 666.

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

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, 38029 + ... + 40091.

It is an arithmetic number, because the mean of its divisors is an integer number (2003456).

Almost surely, 2^80580780 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 80580780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144248832).

80580780 is an abundant number, since it is smaller than the sum of its proper divisors (207916884).

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

80580780 is a wasteful number, since it uses less digits than its factorization.

80580780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 80580780 is about 8976.6797870928. The cubic root of 80580780 is about 431.9271353445.

The spelling of 80580780 in words is "eighty million, five hundred eighty thousand, seven hundred eighty".