28441860 has 96 divisors (see below), whose sum is σ = 85411200. Its totient is φ = 7050240.

The previous prime is 28441813. The next prime is 28441873. The reversal of 28441860 is 6814482.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69336 + ... + 69744.

It is an arithmetic number, because the mean of its divisors is an integer number (889700).

Almost surely, 2^28441860 is an apocalyptic number.

28441860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28441860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42705600).

28441860 is an abundant number, since it is smaller than the sum of its proper divisors (56969340).

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

28441860 is a wasteful number, since it uses less digits than its factorization.

28441860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28441860 is about 5333.0910361628. The cubic root of 28441860 is about 305.2478859101.

The spelling of 28441860 in words is "twenty-eight million, four hundred forty-one thousand, eight hundred sixty".