28369656 has 128 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 7814016.

The previous prime is 28369597. The next prime is 28369657. The reversal of 28369656 is 65696382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369657) 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 31 ways as a sum of consecutive naturals, for example, 43525 + ... + 44171.

It is an arithmetic number, because the mean of its divisors is an integer number (729000).

Almost surely, 2^28369656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28369656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46656000).

28369656 is an abundant number, since it is smaller than the sum of its proper divisors (64942344).

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

28369656 is a wasteful number, since it uses less digits than its factorization.

28369656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 688 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 28369656 is about 5326.3173018513. The cubic root of 28369656 is about 304.9893609117.

The spelling of 28369656 in words is "twenty-eight million, three hundred sixty-nine thousand, six hundred fifty-six".