2789206840 has 64 divisors (see below), whose sum is σ = 7549747200. Its totient is φ = 905966208.

The previous prime is 2789206837. The next prime is 2789206879. The reversal of 2789206840 is 486029872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256824 + ... + 267463.

It is an arithmetic number, because the mean of its divisors is an integer number (117964800).

Almost surely, 2^2789206840 is an apocalyptic number.

2789206840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2789206840 is an abundant number, since it is smaller than the sum of its proper divisors (4760540360).

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

2789206840 is a wasteful number, since it uses less digits than its factorization.

2789206840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524324 (or 524320 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 2789206840 is about 52812.9419744820. The cubic root of 2789206840 is about 1407.6463996158.

The spelling of 2789206840 in words is "two billion, seven hundred eighty-nine million, two hundred six thousand, eight hundred forty".