2802556220 has 24 divisors (see below), whose sum is σ = 5892255600. Its totient is φ = 1119710592.

The previous prime is 2802556219. The next prime is 2802556223. The reversal of 2802556220 is 226552082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2802556223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64385 + ... + 98744.

It is an arithmetic number, because the mean of its divisors is an integer number (245510650).

Almost surely, 2^2802556220 is an apocalyptic number.

2802556220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2802556220 is an abundant number, since it is smaller than the sum of its proper divisors (3089699380).

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

2802556220 is a wasteful number, since it uses less digits than its factorization.

2802556220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163997 (or 163995 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 2802556220 is about 52939.1747196724. The cubic root of 2802556220 is about 1409.8885313352. Note that the first 3 decimals are identical.

The spelling of 2802556220 in words is "two billion, eight hundred two million, five hundred fifty-six thousand, two hundred twenty".