28573663 has 8 divisors (see below), whose sum is σ = 30441600. Its totient is φ = 26742168.

The previous prime is 28573627. The next prime is 28573667. The reversal of 28573663 is 36637582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28573663 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 (28573667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7483 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (3805200).

Almost surely, 2^28573663 is an apocalyptic number.

28573663 is a deficient number, since it is larger than the sum of its proper divisors (1867937).

28573663 is a wasteful number, since it uses less digits than its factorization.

28573663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221.

The product of its digits is 181440, while the sum is 40.

The square root of 28573663 is about 5345.4338458164. The cubic root of 28573663 is about 305.7186778938.

The spelling of 28573663 in words is "twenty-eight million, five hundred seventy-three thousand, six hundred sixty-three".