28233623 has 8 divisors (see below), whose sum is σ = 30838800. Its totient is φ = 25634880.

The previous prime is 28233613. The next prime is 28233629. The reversal of 28233623 is 32633282.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28233623 - 2⁴ = 28233607 is a prime.

It is a super-2 number, since 2×28233623² = 1594274935412258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28233629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16211 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (3854850).

Almost surely, 2^28233623 is an apocalyptic number.

28233623 is a deficient number, since it is larger than the sum of its proper divisors (2605177).

28233623 is a wasteful number, since it uses less digits than its factorization.

28233623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217.

The product of its digits is 10368, while the sum is 29.

The square root of 28233623 is about 5313.5320644558. The cubic root of 28233623 is about 304.5011032250.

It can be divided in two parts, 2823 and 3623, that added together give a palindrome (6446).

The spelling of 28233623 in words is "twenty-eight million, two hundred thirty-three thousand, six hundred twenty-three".