28265699 has 18 divisors (see below), whose sum is σ = 36026964. Its totient is φ = 21929040.

The previous prime is 28265693. The next prime is 28265701. The reversal of 28265699 is 99656282.

It is a happy number.

It is not a de Polignac number, because 28265699 - 2¹² = 28261603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28265693) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123317 + ... + 123545.

It is an arithmetic number, because the mean of its divisors is an integer number (2001498).

Almost surely, 2^28265699 is an apocalyptic number.

28265699 is a deficient number, since it is larger than the sum of its proper divisors (7761265).

28265699 is an equidigital number, since it uses as much as digits as its factorization.

28265699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 247 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 28265699 is about 5316.5495389397. The cubic root of 28265699 is about 304.6163733637.

The spelling of 28265699 in words is "twenty-eight million, two hundred sixty-five thousand, six hundred ninety-nine".