28940299 has 2 divisors, whose sum is σ = 28940300. Its totient is φ = 28940298.

The previous prime is 28940251. The next prime is 28940309. The reversal of 28940299 is 99204982.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28940299 - 2⁹ = 28939787 is a prime.

It is not a weakly prime, because it can be changed into another prime (28940209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14470149 + 14470150.

It is an arithmetic number, because the mean of its divisors is an integer number (14470150).

Almost surely, 2^28940299 is an apocalyptic number.

28940299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28940299 is an equidigital number, since it uses as much as digits as its factorization.

28940299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 28940299 is about 5379.6188526698. The cubic root of 28940299 is about 307.0207096980.

The spelling of 28940299 in words is "twenty-eight million, nine hundred forty thousand, two hundred ninety-nine".