28800223 has 4 divisors (see below), whose sum is σ = 28919968. Its totient is φ = 28680480.

The previous prime is 28800203. The next prime is 28800229. The reversal of 28800223 is 32200882.

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 28800223 - 2⁹ = 28799711 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 (28800229) 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, 59511 + ... + 59992.

It is an arithmetic number, because the mean of its divisors is an integer number (7229992).

Almost surely, 2^28800223 is an apocalyptic number.

28800223 is a deficient number, since it is larger than the sum of its proper divisors (119745).

28800223 is a wasteful number, since it uses less digits than its factorization.

28800223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119744.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28800223 is about 5366.5839227576. The cubic root of 28800223 is about 306.5245640989.

The spelling of 28800223 in words is "twenty-eight million, eight hundred thousand, two hundred twenty-three".