28672056 has 192 divisors, whose sum is σ = 96096000. Its totient is φ = 8001504.

The previous prime is 28672051. The next prime is 28672057. The reversal of 28672056 is 65027682.

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 28672056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 666771 + ... + 666813.

It is an arithmetic number, because the mean of its divisors is an integer number (500500).

Almost surely, 2^28672056 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 28672056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48048000).

28672056 is an abundant number, since it is smaller than the sum of its proper divisors (67423944).

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

28672056 is an equidigital number, since it uses as much as digits as its factorization.

28672056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28672056 is about 5354.6293989407. The cubic root of 28672056 is about 306.0691885071.

The spelling of 28672056 in words is "twenty-eight million, six hundred seventy-two thousand, fifty-six".