28844928 has 192 divisors, whose sum is σ = 98124000. Its totient is φ = 8128512.

The previous prime is 28844927. The next prime is 28844929. The reversal of 28844928 is 82944882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28844927) and next prime (28844929).

It is a tau number, because it is divible by the number of its divisors (192).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28844927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395100 + ... + 395172.

Almost surely, 2^28844928 is an apocalyptic number.

28844928 is a gapful number since it is divisible by the number (28) 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 28844928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49062000).

28844928 is an abundant number, since it is smaller than the sum of its proper divisors (69279072).

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

28844928 is an equidigital number, since it uses as much as digits as its factorization.

28844928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 85 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 28844928 is about 5370.7474340170. The cubic root of 28844928 is about 306.6830825071.

The spelling of 28844928 in words is "twenty-eight million, eight hundred forty-four thousand, nine hundred twenty-eight".