2728918272 has 72 divisors (see below), whose sum is σ = 7400048544. Its totient is φ = 892463104.

The previous prime is 2728918259. The next prime is 2728918337. The reversal of 2728918272 is 2728198272.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 7183 + ... + 74225.

It is an arithmetic number, because the mean of its divisors is an integer number (102778452).

Almost surely, 2^2728918272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2728918272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3700024272).

2728918272 is an abundant number, since it is smaller than the sum of its proper divisors (4671130272).

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

2728918272 is an equidigital number, since it uses as much as digits as its factorization.

2728918272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67115 (or 67101 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 2728918272 is about 52239.0493022222. The cubic root of 2728918272 is about 1397.4303667183.

The spelling of 2728918272 in words is "two billion, seven hundred twenty-eight million, nine hundred eighteen thousand, two hundred seventy-two".