28885623 has 16 divisors (see below), whose sum is σ = 41580000. Its totient is φ = 17731584.

The previous prime is 28885621. The next prime is 28885627. The reversal of 28885623 is 32658882.

It is not a de Polignac number, because 28885623 - 2¹ = 28885621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885621) 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, 22503 + ... + 23751.

It is an arithmetic number, because the mean of its divisors is an integer number (2598750).

Almost surely, 2^28885623 is an apocalyptic number.

28885623 is a deficient number, since it is larger than the sum of its proper divisors (12694377).

28885623 is a wasteful number, since it uses less digits than its factorization.

28885623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its digits is 184320, while the sum is 42.

The square root of 28885623 is about 5374.5346775326. The cubic root of 28885623 is about 306.8272396059.

The spelling of 28885623 in words is "twenty-eight million, eight hundred eighty-five thousand, six hundred twenty-three".