28723097629 has 2 divisors, whose sum is σ = 28723097630. Its totient is φ = 28723097628.

The previous prime is 28723097593. The next prime is 28723097653. The reversal of 28723097629 is 92679032782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21492146404 + 7230951225 = 146602^2 + 85035^2 .

It is a cyclic number.

It is not a de Polignac number, because 28723097629 - 2²⁷ = 28588879901 is a prime.

It is a super-4 number, since 4×28723097629⁴ (a number of 43 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28723097629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28723097329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14361548814 + 14361548815.

It is an arithmetic number, because the mean of its divisors is an integer number (14361548815).

Almost surely, 2^28723097629 is an apocalyptic number.

It is an amenable number.

28723097629 is a deficient number, since it is larger than the sum of its proper divisors (1).

28723097629 is an equidigital number, since it uses as much as digits as its factorization.

28723097629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 28723097629 in words is "twenty-eight billion, seven hundred twenty-three million, ninety-seven thousand, six hundred twenty-nine".