2728357220 has 24 divisors (see below), whose sum is σ = 5730623808. Its totient is φ = 1091138400.

The previous prime is 2728357157. The next prime is 2728357243. The reversal of 2728357220 is 227538272.

It is a super-2 number, since 2×2728357220² = 14887866239852256800, which contains 22 as substring.

It is an unprimeable number.

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, 142835 + ... + 160805.

It is an arithmetic number, because the mean of its divisors is an integer number (238775992).

Almost surely, 2^2728357220 is an apocalyptic number.

2728357220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2728357220 is an abundant number, since it is smaller than the sum of its proper divisors (3002266588).

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

2728357220 is a wasteful number, since it uses less digits than its factorization.

2728357220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25571 (or 25569 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 2728357220 is about 52233.6789820514. The cubic root of 2728357220 is about 1397.3345919141.

The spelling of 2728357220 in words is "two billion, seven hundred twenty-eight million, three hundred fifty-seven thousand, two hundred twenty".