28798291 has 2 divisors, whose sum is σ = 28798292. Its totient is φ = 28798290.

The previous prime is 28798279. The next prime is 28798307. The reversal of 28798291 is 19289782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28798291 - 2¹⁹ = 28274003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28798201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14399145 + 14399146.

It is an arithmetic number, because the mean of its divisors is an integer number (14399146).

Almost surely, 2^28798291 is an apocalyptic number.

28798291 is a deficient number, since it is larger than the sum of its proper divisors (1).

28798291 is an equidigital number, since it uses as much as digits as its factorization.

28798291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 28798291 is about 5366.4039169634. The cubic root of 28798291 is about 306.5177097689.

The spelling of 28798291 in words is "twenty-eight million, seven hundred ninety-eight thousand, two hundred ninety-one".