28359223 has 2 divisors, whose sum is σ = 28359224. Its totient is φ = 28359222.

The previous prime is 28359217. The next prime is 28359239. The reversal of 28359223 is 32295382.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28359223 is a prime.

It is a super-3 number, since 3×28359223³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28359263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14179611 + 14179612.

It is an arithmetic number, because the mean of its divisors is an integer number (14179612).

Almost surely, 2^28359223 is an apocalyptic number.

28359223 is a deficient number, since it is larger than the sum of its proper divisors (1).

28359223 is an equidigital number, since it uses as much as digits as its factorization.

28359223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 28359223 is about 5325.3378296593. The cubic root of 28359223 is about 304.9519695038.

It can be divided in two parts, 28359 and 223, that added together give a palindrome (28582).

The spelling of 28359223 in words is "twenty-eight million, three hundred fifty-nine thousand, two hundred twenty-three".