28969323 has 16 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 18817760.

The previous prime is 28969307. The next prime is 28969337. The reversal of 28969323 is 32396982.

It is a cyclic number.

It is not a de Polignac number, because 28969323 - 2⁴ = 28969307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28969363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26008 + ... + 27098.

It is an arithmetic number, because the mean of its divisors is an integer number (2476656).

Almost surely, 2^28969323 is an apocalyptic number.

28969323 is a deficient number, since it is larger than the sum of its proper divisors (10657173).

28969323 is a wasteful number, since it uses less digits than its factorization.

28969323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314.

The product of its digits is 139968, while the sum is 42.

The square root of 28969323 is about 5382.3157655418. The cubic root of 28969323 is about 307.1233116306.

It can be divided in two parts, 28969 and 323, that added together give a palindrome (29292).

The spelling of 28969323 in words is "twenty-eight million, nine hundred sixty-nine thousand, three hundred twenty-three".