28569024 has 168 divisors, whose sum is σ = 93195648. Its totient is φ = 8605440.

The previous prime is 28569017. The next prime is 28569041. The reversal of 28569024 is 42096582.

It is a happy number.

It is a Cunningham number, because it is equal to 5345²-1.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28569024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170989 + ... + 171155.

It is an arithmetic number, because the mean of its divisors is an integer number (554736).

Almost surely, 2^28569024 is an apocalyptic number.

28569024 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 28569024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46597824).

28569024 is an abundant number, since it is smaller than the sum of its proper divisors (64626624).

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

28569024 is a wasteful number, since it uses less digits than its factorization.

28569024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 183 counting only the distinct ones).

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

The square root of 28569024 is about 5344.9999064546. Note that the first 4 decimals coincide. The cubic root of 28569024 is about 305.7021322879.

The spelling of 28569024 in words is "twenty-eight million, five hundred sixty-nine thousand, twenty-four".