28441872 has 60 divisors (see below), whose sum is σ = 80006784. Its totient is φ = 9432000.

The previous prime is 28441813. The next prime is 28441873. The reversal of 28441872 is 27814482.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28441873) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 37497 + ... + 38247.

Almost surely, 2^28441872 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 28441872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40003392).

28441872 is an abundant number, since it is smaller than the sum of its proper divisors (51564912).

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

28441872 is a wasteful number, since it uses less digits than its factorization.

28441872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1019 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 28441872 is about 5333.0921612138. The cubic root of 28441872 is about 305.2479288395.

The spelling of 28441872 in words is "twenty-eight million, four hundred forty-one thousand, eight hundred seventy-two".