28241248 has 96 divisors (see below), whose sum is σ = 67737600. Its totient is φ = 11571840.

The previous prime is 28241243. The next prime is 28241281. The reversal of 28241248 is 84214282.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 (28241243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340215 + ... + 340297.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^28241248 is an apocalyptic number.

28241248 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 28241248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33868800).

28241248 is an abundant number, since it is smaller than the sum of its proper divisors (39496352).

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

28241248 is an equidigital number, since it uses as much as digits as its factorization.

28241248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 123 counting only the distinct ones).

The product of its digits is 8192, while the sum is 31.

The square root of 28241248 is about 5314.2495236863. The cubic root of 28241248 is about 304.5285127658.

The spelling of 28241248 in words is "twenty-eight million, two hundred forty-one thousand, two hundred forty-eight".