28269504 has 84 divisors (see below), whose sum is σ = 85825584. Its totient is φ = 8865792.

The previous prime is 28269503. The next prime is 28269509. The reversal of 28269504 is 40596282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28269503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8349 + ... + 11235.

Almost surely, 2^28269504 is an apocalyptic number.

28269504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28269504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42912792).

28269504 is an abundant number, since it is smaller than the sum of its proper divisors (57556080).

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

28269504 is a wasteful number, since it uses less digits than its factorization.

28269504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922 (or 2909 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28269504 is about 5316.9073717717. The cubic root of 28269504 is about 304.6300414412.

The spelling of 28269504 in words is "twenty-eight million, two hundred sixty-nine thousand, five hundred four".