2788180 has 12 divisors (see below), whose sum is σ = 5855220. Its totient is φ = 1115264.

The previous prime is 2788133. The next prime is 2788199. The reversal of 2788180 is 818872.

It can be written as a sum of positive squares in 2 ways, for example, as 391876 + 2396304 = 626^2 + 1548^2 .

It is a congruent number.

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, 69685 + ... + 69724.

It is an arithmetic number, because the mean of its divisors is an integer number (487935).

2^2788180 is an apocalyptic number.

2788180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2788180 is an abundant number, since it is smaller than the sum of its proper divisors (3067040).

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

2788180 is a wasteful number, since it uses less digits than its factorization.

2788180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139418 (or 139416 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 2788180 is about 1669.7844172228. The cubic root of 2788180 is about 140.7473637833.

The spelling of 2788180 in words is "two million, seven hundred eighty-eight thousand, one hundred eighty".