2728572220 has 24 divisors (see below), whose sum is σ = 6250911408. Its totient is φ = 992208000.

The previous prime is 2728572163. The next prime is 2728572227. The reversal of 2728572220 is 222758272.

It is a self number, because there is not a number n which added to its sum of digits gives 2728572220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728572227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6201081 + ... + 6201520.

It is an arithmetic number, because the mean of its divisors is an integer number (260454642).

Almost surely, 2^2728572220 is an apocalyptic number.

2728572220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2728572220 is an abundant number, since it is smaller than the sum of its proper divisors (3522339188).

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

2728572220 is a wasteful number, since it uses less digits than its factorization.

2728572220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402621 (or 12402619 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 2728572220 is about 52235.7370006397. The cubic root of 2728572220 is about 1397.3712952026.

The spelling of 2728572220 in words is "two billion, seven hundred twenty-eight million, five hundred seventy-two thousand, two hundred twenty".