28844460 has 144 divisors (see below), whose sum is σ = 92619072. Its totient is φ = 7257600.

The previous prime is 28844449. The next prime is 28844467. The reversal of 28844460 is 6444882.

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

It is not an unprimeable number, because it can be changed into a prime (28844467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 406225 + ... + 406295.

It is an arithmetic number, because the mean of its divisors is an integer number (643188).

Almost surely, 2^28844460 is an apocalyptic number.

28844460 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 28844460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46309536).

28844460 is an abundant number, since it is smaller than the sum of its proper divisors (63774612).

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

28844460 is a wasteful number, since it uses less digits than its factorization.

28844460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 28844460 is about 5370.7038644855. The cubic root of 28844460 is about 306.6814238855.

The spelling of 28844460 in words is "twenty-eight million, eight hundred forty-four thousand, four hundred sixty".