28056582 has 48 divisors (see below), whose sum is σ = 63192480. Its totient is φ = 8989056.

The previous prime is 28056569. The next prime is 28056583. The reversal of 28056582 is 28565082.

28056582 is a `hidden beast` number, since 28 + 0 + 56 + 582 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68394 + ... + 68802.

It is an arithmetic number, because the mean of its divisors is an integer number (1316510).

Almost surely, 2^28056582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28056582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31596240).

28056582 is an abundant number, since it is smaller than the sum of its proper divisors (35135898).

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

28056582 is a wasteful number, since it uses less digits than its factorization.

28056582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 28056582 is about 5296.8464202769. The cubic root of 28056582 is about 303.8633027499.

The spelling of 28056582 in words is "twenty-eight million, fifty-six thousand, five hundred eighty-two".