28059556 has 36 divisors (see below), whose sum is σ = 57456000. Its totient is φ = 11955216.

The previous prime is 28059553. The next prime is 28059583. The reversal of 28059556 is 65595082.

It is not an unprimeable number, because it can be changed into a prime (28059553) 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, 46545 + ... + 47143.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^28059556 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 28059556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28728000).

28059556 is an abundant number, since it is smaller than the sum of its proper divisors (29396444).

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

28059556 is a wasteful number, since it uses less digits than its factorization.

28059556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 28059556 is about 5297.1271459160. The cubic root of 28059556 is about 303.8740388822.

The spelling of 28059556 in words is "twenty-eight million, fifty-nine thousand, five hundred fifty-six".