2878280 has 32 divisors (see below), whose sum is σ = 6618240. Its totient is φ = 1126080.

The previous prime is 2878247. The next prime is 2878297. The reversal of 2878280 is 828782.

It is a self number, because there is not a number n which added to its sum of digits gives 2878280.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115 + ... + 2645.

It is an arithmetic number, because the mean of its divisors is an integer number (206820).

2^2878280 is an apocalyptic number.

2878280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2878280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3309120).

2878280 is an abundant number, since it is smaller than the sum of its proper divisors (3739960).

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

2878280 is a wasteful number, since it uses less digits than its factorization.

2878280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 2878280 is about 1696.5494393032. The cubic root of 2878280 is about 142.2474031296.

The spelling of 2878280 in words is "two million, eight hundred seventy-eight thousand, two hundred eighty".