2789680 has 20 divisors (see below), whose sum is σ = 6486192. Its totient is φ = 1115840.

The previous prime is 2789669. The next prime is 2789701. The reversal of 2789680 is 869872.

It is a tau number, because it is divible by the number of its divisors (20).

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

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, 17356 + ... + 17515.

2^2789680 is an apocalyptic number.

2789680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2789680 is an abundant number, since it is smaller than the sum of its proper divisors (3696512).

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

2789680 is a wasteful number, since it uses less digits than its factorization.

2789680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34884 (or 34878 counting only the distinct ones).

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

The square root of 2789680 is about 1670.2335166078. The cubic root of 2789680 is about 140.7725992651.

The spelling of 2789680 in words is "two million, seven hundred eighty-nine thousand, six hundred eighty".