2728909746 has 12 divisors (see below), whose sum is σ = 5912637822. Its totient is φ = 909636576.

The previous prime is 2728909741. The next prime is 2728909793. The reversal of 2728909746 is 6479098272.

It can be written as a sum of positive squares in only one way, i.e., 2705144121 + 23765625 = 52011^2 + 4875^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2728909692 and 2728909701.

It is not an unprimeable number, because it can be changed into a prime (2728909741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75803031 + ... + 75803066.

Almost surely, 2^2728909746 is an apocalyptic number.

2728909746 is an abundant number, since it is smaller than the sum of its proper divisors (3183728076).

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

2728909746 is a wasteful number, since it uses less digits than its factorization.

2728909746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151606105 (or 151606102 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 2728909746 is about 52238.9676965386. The cubic root of 2728909746 is about 1397.4289113793.

The spelling of 2728909746 in words is "two billion, seven hundred twenty-eight million, nine hundred nine thousand, seven hundred forty-six".