2728943772 has 24 divisors (see below), whose sum is σ = 6386439696. Its totient is φ = 906947328.

The previous prime is 2728943753. The next prime is 2728943773. The reversal of 2728943772 is 2773498272.

It is a happy number.

It is a super-2 number, since 2×2728943772² = 14894268221475175968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728943773) 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, 333363 + ... + 341450.

It is an arithmetic number, because the mean of its divisors is an integer number (266101654).

Almost surely, 2^2728943772 is an apocalyptic number.

It is an amenable number.

2728943772 is an abundant number, since it is smaller than the sum of its proper divisors (3657495924).

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

2728943772 is a wasteful number, since it uses less digits than its factorization.

2728943772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675157 (or 675155 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 51.

The square root of 2728943772 is about 52239.2933719437. The cubic root of 2728943772 is about 1397.4347194031.

The spelling of 2728943772 in words is "two billion, seven hundred twenty-eight million, nine hundred forty-three thousand, seven hundred seventy-two".