28665463 has 4 divisors (see below), whose sum is σ = 28676368. Its totient is φ = 28654560.

The previous prime is 28665457. The next prime is 28665473. The reversal of 28665463 is 36456682.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28665463 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 (28665443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (7169092).

Almost surely, 2^28665463 is an apocalyptic number.

28665463 is a deficient number, since it is larger than the sum of its proper divisors (10905).

28665463 is an equidigital number, since it uses as much as digits as its factorization.

28665463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904.

The product of its digits is 207360, while the sum is 40.

The square root of 28665463 is about 5354.0137280362. The cubic root of 28665463 is about 306.0457270010.

The spelling of 28665463 in words is "twenty-eight million, six hundred sixty-five thousand, four hundred sixty-three".