2780832220 has 12 divisors (see below), whose sum is σ = 5839747704. Its totient is φ = 1112332880.

The previous prime is 2780832211. The next prime is 2780832247. The reversal of 2780832220 is 222380872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69520786 + ... + 69520825.

It is an arithmetic number, because the mean of its divisors is an integer number (486645642).

Almost surely, 2^2780832220 is an apocalyptic number.

2780832220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780832220 is an abundant number, since it is smaller than the sum of its proper divisors (3058915484).

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

2780832220 is a wasteful number, since it uses less digits than its factorization.

2780832220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139041620 (or 139041618 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 2780832220 is about 52733.5966912935. The cubic root of 2780832220 is about 1406.2361633667.

The spelling of 2780832220 in words is "two billion, seven hundred eighty million, eight hundred thirty-two thousand, two hundred twenty".