28250899 has 2 divisors, whose sum is σ = 28250900. Its totient is φ = 28250898.

The previous prime is 28250881. The next prime is 28250903. The reversal of 28250899 is 99805282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28250899 - 2⁵ = 28250867 is a prime.

It is a super-2 number, since 2×28250899² = 1596226588616402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28250809) 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, 14125449 + 14125450.

It is an arithmetic number, because the mean of its divisors is an integer number (14125450).

Almost surely, 2^28250899 is an apocalyptic number.

28250899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28250899 is an equidigital number, since it uses as much as digits as its factorization.

28250899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 28250899 is about 5315.1574765006. The cubic root of 28250899 is about 304.5631980832.

The spelling of 28250899 in words is "twenty-eight million, two hundred fifty thousand, eight hundred ninety-nine".