28841844 has 12 divisors (see below), whose sum is σ = 67297664. Its totient is φ = 9613944.

The previous prime is 28841821. The next prime is 28841849. The reversal of 28841844 is 44814882.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28841849) 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 3 ways as a sum of consecutive naturals, for example, 1201732 + ... + 1201755.

Almost surely, 2^28841844 is an apocalyptic number.

It is an amenable number.

28841844 is an abundant number, since it is smaller than the sum of its proper divisors (38455820).

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

28841844 is a wasteful number, since it uses less digits than its factorization.

28841844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403494 (or 2403492 counting only the distinct ones).

The product of its digits is 65536, while the sum is 39.

The square root of 28841844 is about 5370.4603154664. The cubic root of 28841844 is about 306.6721522858.

The spelling of 28841844 in words is "twenty-eight million, eight hundred forty-one thousand, eight hundred forty-four".