28965504 has 32 divisors (see below), whose sum is σ = 76940640. Its totient is φ = 9655040.

The previous prime is 28965491. The next prime is 28965509. The reversal of 28965504 is 40556982.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (28965509) 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 3 ways as a sum of consecutive naturals, for example, 37332 + ... + 38099.

It is an arithmetic number, because the mean of its divisors is an integer number (2404395).

Almost surely, 2^28965504 is an apocalyptic number.

28965504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28965504 is an abundant number, since it is smaller than the sum of its proper divisors (47975136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28965504 is an equidigital number, since it uses as much as digits as its factorization.

28965504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75448 (or 75436 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 28965504 is about 5381.9609809065. The cubic root of 28965504 is about 307.1098151068.

The spelling of 28965504 in words is "twenty-eight million, nine hundred sixty-five thousand, five hundred four".