28465799 has 4 divisors (see below), whose sum is σ = 28600920. Its totient is φ = 28330680.

The previous prime is 28465783. The next prime is 28465807. The reversal of 28465799 is 99756482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28465799 - 2⁴ = 28465783 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 (28465499) 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 in 3 ways as a sum of consecutive naturals, for example, 67244 + ... + 67665.

It is an arithmetic number, because the mean of its divisors is an integer number (7150230).

Almost surely, 2^28465799 is an apocalyptic number.

28465799 is a deficient number, since it is larger than the sum of its proper divisors (135121).

28465799 is a wasteful number, since it uses less digits than its factorization.

28465799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135120.

The product of its digits is 1088640, while the sum is 50.

The square root of 28465799 is about 5335.3349473112. The cubic root of 28465799 is about 305.3335024386. Note that the first 3 decimals are identical.

The spelling of 28465799 in words is "twenty-eight million, four hundred sixty-five thousand, seven hundred ninety-nine".