2782972220 has 24 divisors (see below), whose sum is σ = 6679133664. Its totient is φ = 954161856.

The previous prime is 2782972219. The next prime is 2782972259. The reversal of 2782972220 is 222792872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9939047 + ... + 9939326.

It is an arithmetic number, because the mean of its divisors is an integer number (278297236).

Almost surely, 2^2782972220 is an apocalyptic number.

2782972220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2782972220 is an abundant number, since it is smaller than the sum of its proper divisors (3896161444).

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

2782972220 is a wasteful number, since it uses less digits than its factorization.

2782972220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19878389 (or 19878387 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 2782972220 is about 52753.8834589455. The cubic root of 2782972220 is about 1406.5967956680.

The spelling of 2782972220 in words is "two billion, seven hundred eighty-two million, nine hundred seventy-two thousand, two hundred twenty".