28444248 has 48 divisors (see below), whose sum is σ = 88043280. Its totient is φ = 8126784.

The previous prime is 28444243. The next prime is 28444253. The reversal of 28444248 is 84244482.

It is an interprime number because it is at equal distance from previous prime (28444243) and next prime (28444253).

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

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 (28444243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27715 + ... + 28722.

It is an arithmetic number, because the mean of its divisors is an integer number (1834235).

Almost surely, 2^28444248 is an apocalyptic number.

28444248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28444248 is an abundant number, since it is smaller than the sum of its proper divisors (59599032).

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

28444248 is a wasteful number, since it uses less digits than its factorization.

28444248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56456 (or 56449 counting only the distinct ones).

The product of its digits is 65536, while the sum is 36.

The square root of 28444248 is about 5333.3149166349. The cubic root of 28444248 is about 305.2564286186.

The spelling of 28444248 in words is "twenty-eight million, four hundred forty-four thousand, two hundred forty-eight".