28140793 has 2 divisors, whose sum is σ = 28140794. Its totient is φ = 28140792.

The previous prime is 28140781. The next prime is 28140803. The reversal of 28140793 is 39704182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26915344 + 1225449 = 5188^2 + 1107^2 .

It is a cyclic number.

It is not a de Polignac number, because 28140793 - 2¹⁷ = 28009721 is a prime.

It is not a weakly prime, because it can be changed into another prime (28140713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14070396 + 14070397.

It is an arithmetic number, because the mean of its divisors is an integer number (14070397).

Almost surely, 2^28140793 is an apocalyptic number.

It is an amenable number.

28140793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28140793 is an equidigital number, since it uses as much as digits as its factorization.

28140793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28140793 is about 5304.7896282511. The cubic root of 28140793 is about 304.1670113296.

The spelling of 28140793 in words is "twenty-eight million, one hundred forty thousand, seven hundred ninety-three".