28418899 has 2 divisors, whose sum is σ = 28418900. Its totient is φ = 28418898.

The previous prime is 28418881. The next prime is 28418903. The reversal of 28418899 is 99881482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28418899 - 2⁵ = 28418867 is a prime.

It is not a weakly prime, because it can be changed into another prime (28413899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209449 + 14209450.

It is an arithmetic number, because the mean of its divisors is an integer number (14209450).

Almost surely, 2^28418899 is an apocalyptic number.

28418899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418899 is an equidigital number, since it uses as much as digits as its factorization.

28418899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 49.

The square root of 28418899 is about 5330.9379099742. The cubic root of 28418899 is about 305.1657219962.

The spelling of 28418899 in words is "twenty-eight million, four hundred eighteen thousand, eight hundred ninety-nine".