28988299 has 2 divisors, whose sum is σ = 28988300. Its totient is φ = 28988298.

The previous prime is 28988291. The next prime is 28988347. The reversal of 28988299 is 99288982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28988299 - 2³ = 28988291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28988291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14494149 + 14494150.

It is an arithmetic number, because the mean of its divisors is an integer number (14494150).

Almost surely, 2^28988299 is an apocalyptic number.

28988299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28988299 is an equidigital number, since it uses as much as digits as its factorization.

28988299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 55.

The square root of 28988299 is about 5384.0782869494. The cubic root of 28988299 is about 307.1903561143.

It can be divided in two parts, 289 and 88299, that added together give a palindrome (88588).

The spelling of 28988299 in words is "twenty-eight million, nine hundred eighty-eight thousand, two hundred ninety-nine".