2628728273 has 2 divisors, whose sum is σ = 2628728274. Its totient is φ = 2628728272.

The previous prime is 2628728231. The next prime is 2628728281. The reversal of 2628728273 is 3728278262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055987649 + 572740624 = 45343^2 + 23932^2 .

It is a cyclic number.

It is not a de Polignac number, because 2628728273 - 2⁸ = 2628728017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2628728203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314364136 + 1314364137.

It is an arithmetic number, because the mean of its divisors is an integer number (1314364137).

Almost surely, 2^2628728273 is an apocalyptic number.

It is an amenable number.

2628728273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628728273 is an equidigital number, since it uses as much as digits as its factorization.

2628728273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 47.

The square root of 2628728273 is about 51271.1251388147. The cubic root of 2628728273 is about 1380.1148600399.

The spelling of 2628728273 in words is "two billion, six hundred twenty-eight million, seven hundred twenty-eight thousand, two hundred seventy-three".