2800780 has 24 divisors (see below), whose sum is σ = 5932080. Its totient is φ = 1110720.

The previous prime is 2800769. The next prime is 2800781. The reversal of 2800780 is 870082.

2800780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2800781) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2086 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (247170).

2^2800780 is an apocalyptic number.

2800780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2800780 is an abundant number, since it is smaller than the sum of its proper divisors (3131300).

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

2800780 is a wasteful number, since it uses less digits than its factorization.

2800780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2800780 is about 1673.5531064176. The cubic root of 2800780 is about 140.9590612667.

The spelling of 2800780 in words is "two million, eight hundred thousand, seven hundred eighty".