28227799 has 2 divisors, whose sum is σ = 28227800. Its totient is φ = 28227798.

The previous prime is 28227779. The next prime is 28227821. The reversal of 28227799 is 99772282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28227799 - 2⁵ = 28227767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28227709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113899 + 14113900.

It is an arithmetic number, because the mean of its divisors is an integer number (14113900).

Almost surely, 2^28227799 is an apocalyptic number.

28227799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28227799 is an equidigital number, since it uses as much as digits as its factorization.

28227799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 28227799 is about 5312.9840014817. The cubic root of 28227799 is about 304.4801644035.

It can be divided in two parts, 282277 and 99, that added together give a triangular number (282376 = T₇₅₁).

The spelling of 28227799 in words is "twenty-eight million, two hundred twenty-seven thousand, seven hundred ninety-nine".