2798680 has 64 divisors (see below), whose sum is σ = 6785280. Its totient is φ = 1036800.

The previous prime is 2798669. The next prime is 2798687. The reversal of 2798680 is 868972.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45850 + ... + 45910.

It is an arithmetic number, because the mean of its divisors is an integer number (106020).

2^2798680 is an apocalyptic number.

2798680 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 2798680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3392640).

2798680 is an abundant number, since it is smaller than the sum of its proper divisors (3986600).

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

2798680 is a wasteful number, since it uses less digits than its factorization.

2798680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2798680 is about 1672.9255811303. The cubic root of 2798680 is about 140.9238225067.

The spelling of 2798680 in words is "two million, seven hundred ninety-eight thousand, six hundred eighty".