28300223 has 16 divisors (see below), whose sum is σ = 34479360. Its totient is φ = 22674816.

The previous prime is 28300219. The next prime is 28300231. The reversal of 28300223 is 32200382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28300223 - 2² = 28300219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28300195 and 28300204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18668 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (2154960).

Almost surely, 2^28300223 is an apocalyptic number.

28300223 is a deficient number, since it is larger than the sum of its proper divisors (6179137).

28300223 is a wasteful number, since it uses less digits than its factorization.

28300223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 28300223 is about 5319.7953908022. The cubic root of 28300223 is about 304.7403433728.

The spelling of 28300223 in words is "twenty-eight million, three hundred thousand, two hundred twenty-three".