28489023 has 16 divisors (see below), whose sum is σ = 42515200. Its totient is φ = 18853560.

The previous prime is 28489007. The next prime is 28489057. The reversal of 28489023 is 32098482.

It is not a de Polignac number, because 28489023 - 2⁴ = 28489007 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 (28489073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (2657200).

Almost surely, 2^28489023 is an apocalyptic number.

28489023 is a deficient number, since it is larger than the sum of its proper divisors (14026177).

28489023 is a wasteful number, since it uses less digits than its factorization.

28489023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739 (or 7733 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28489023 is about 5337.5109367569. The cubic root of 28489023 is about 305.4165159490.

The spelling of 28489023 in words is "twenty-eight million, four hundred eighty-nine thousand, twenty-three".