28497799 has 6 divisors (see below), whose sum is σ = 31324160. Its totient is φ = 25906980.

The previous prime is 28497769. The next prime is 28497803. The reversal of 28497799 is 99779482.

It is not a de Polignac number, because 28497799 - 2⁷ = 28497671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117639 + ... + 117880.

Almost surely, 2^28497799 is an apocalyptic number.

28497799 is a deficient number, since it is larger than the sum of its proper divisors (2826361).

28497799 is a wasteful number, since it uses less digits than its factorization.

28497799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235541 (or 235530 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 55.

The square root of 28497799 is about 5338.3329794984. The cubic root of 28497799 is about 305.4478737597.

It can be divided in two parts, 2849 and 7799, that added together give a cube (10648 = 22³).

The spelling of 28497799 in words is "twenty-eight million, four hundred ninety-seven thousand, seven hundred ninety-nine".