80500780 has 48 divisors (see below), whose sum is σ = 182075040. Its totient is φ = 29785088.

The previous prime is 80500741. The next prime is 80500793. The reversal of 80500780 is 8700508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18054 + ... + 22066.

It is an arithmetic number, because the mean of its divisors is an integer number (3793230).

Almost surely, 2^80500780 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 80500780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91037520).

80500780 is an abundant number, since it is smaller than the sum of its proper divisors (101574260).

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

80500780 is a wasteful number, since it uses less digits than its factorization.

80500780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098 (or 4096 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 80500780 is about 8972.2226900585. Note that the first 3 decimals coincide. The cubic root of 80500780 is about 431.7841499983.

The spelling of 80500780 in words is "eighty million, five hundred thousand, seven hundred eighty".