28816056 has 48 divisors (see below), whose sum is σ = 81441360. Its totient is φ = 9187200.

The previous prime is 28816049. The next prime is 28816057. The reversal of 28816056 is 65061882.

It is a happy number.

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 28816056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816057) 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, 7045 + ... + 10356.

It is an arithmetic number, because the mean of its divisors is an integer number (1696695).

Almost surely, 2^28816056 is an apocalyptic number.

It is an amenable number.

28816056 is an abundant number, since it is smaller than the sum of its proper divisors (52625304).

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

28816056 is a wasteful number, since it uses less digits than its factorization.

28816056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436 (or 17429 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28816056 is about 5368.0588670394. The cubic root of 28816056 is about 306.5807247097.

The spelling of 28816056 in words is "twenty-eight million, eight hundred sixteen thousand, fifty-six".