28375056 has 80 divisors (see below), whose sum is σ = 85758400. Its totient is φ = 8957952.

The previous prime is 28375051. The next prime is 28375073. The reversal of 28375056 is 65057382.

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 28375056.

It is not an unprimeable number, because it can be changed into a prime (28375051) 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, 6480 + ... + 9936.

It is an arithmetic number, because the mean of its divisors is an integer number (1071980).

Almost surely, 2^28375056 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 28375056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42879200).

28375056 is an abundant number, since it is smaller than the sum of its proper divisors (57383344).

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

28375056 is a wasteful number, since it uses less digits than its factorization.

28375056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493 (or 3481 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28375056 is about 5326.8241945835. The cubic root of 28375056 is about 305.0087106712.

The spelling of 28375056 in words is "twenty-eight million, three hundred seventy-five thousand, fifty-six".