28412663 has 4 divisors (see below), whose sum is σ = 29392440. Its totient is φ = 27432888.

The previous prime is 28412639. The next prime is 28412669. The reversal of 28412663 is 36621482.

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 28412663 - 2⁶ = 28412599 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 (28412669) 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, 489845 + ... + 489902.

It is an arithmetic number, because the mean of its divisors is an integer number (7348110).

Almost surely, 2^28412663 is an apocalyptic number.

28412663 is a deficient number, since it is larger than the sum of its proper divisors (979777).

28412663 is an equidigital number, since it uses as much as digits as its factorization.

28412663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979776.

The product of its digits is 13824, while the sum is 32.

The square root of 28412663 is about 5330.3529901874. The cubic root of 28412663 is about 305.1433993785.

The spelling of 28412663 in words is "twenty-eight million, four hundred twelve thousand, six hundred sixty-three".