2798840 has 32 divisors (see below), whose sum is σ = 6870960. Its totient is φ = 1017600.

The previous prime is 2798837. The next prime is 2798849. The reversal of 2798840 is 488972.

It is a junction number, because it is equal to n+sod(n) for n = 2798794 and 2798803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2741 + ... + 3620.

2^2798840 is an apocalyptic number.

2798840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2798840 is an abundant number, since it is smaller than the sum of its proper divisors (4072120).

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

2798840 is a wasteful number, since it uses less digits than its factorization.

2798840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6379 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2798840 is about 1672.9734008645. The cubic root of 2798840 is about 140.9265079849.

It can be divided in two parts, 279 and 8840, that added together give a palindrome (9119).

The spelling of 2798840 in words is "two million, seven hundred ninety-eight thousand, eight hundred forty".