2788580 has 12 divisors (see below), whose sum is σ = 5856060. Its totient is φ = 1115424.

The previous prime is 2788567. The next prime is 2788603. The reversal of 2788580 is 858872.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 2238016 = 742^2 + 1496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69695 + ... + 69734.

It is an arithmetic number, because the mean of its divisors is an integer number (488005).

2^2788580 is an apocalyptic number.

2788580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2788580 is an abundant number, since it is smaller than the sum of its proper divisors (3067480).

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

2788580 is a wasteful number, since it uses less digits than its factorization.

2788580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139438 (or 139436 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 2788580 is about 1669.9041888683. The cubic root of 2788580 is about 140.7540941299.

The spelling of 2788580 in words is "two million, seven hundred eighty-eight thousand, five hundred eighty".