2879780 has 24 divisors (see below), whose sum is σ = 6107640. Its totient is φ = 1140480.

The previous prime is 2879771. The next prime is 2879791. The reversal of 2879780 is 879782.

2879780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1132096 + 1747684 = 1064^2 + 1322^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1520 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (254485).

2^2879780 is an apocalyptic number.

2879780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2879780 is an abundant number, since it is smaller than the sum of its proper divisors (3227860).

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

2879780 is a wasteful number, since it uses less digits than its factorization.

2879780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2879780 is about 1696.9914554882. The cubic root of 2879780 is about 142.2721093257.

The spelling of 2879780 in words is "two million, eight hundred seventy-nine thousand, seven hundred eighty".