28291588723 has 2 divisors, whose sum is σ = 28291588724. Its totient is φ = 28291588722.

The previous prime is 28291588669. The next prime is 28291588729. The reversal of 28291588723 is 32788519282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28291588723 - 2³³ = 19701654131 is a prime.

It is not a weakly prime, because it can be changed into another prime (28291588729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14145794361 + 14145794362.

It is an arithmetic number, because the mean of its divisors is an integer number (14145794362).

Almost surely, 2^28291588723 is an apocalyptic number.

28291588723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28291588723 is an equidigital number, since it uses as much as digits as its factorization.

28291588723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The spelling of 28291588723 in words is "twenty-eight billion, two hundred ninety-one million, five hundred eighty-eight thousand, seven hundred twenty-three".