28112448 has 112 divisors (see below), whose sum is σ = 91602560. Its totient is φ = 7409664.

The previous prime is 28112423. The next prime is 28112473. The reversal of 28112448 is 84421182.

It is an interprime number because it is at equal distance from previous prime (28112423) and next prime (28112473).

It is a tau number, because it is divible by the number of its divisors (112).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16668 + ... + 18276.

It is an arithmetic number, because the mean of its divisors is an integer number (817880).

Almost surely, 2^28112448 is an apocalyptic number.

28112448 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 28112448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45801280).

28112448 is an abundant number, since it is smaller than the sum of its proper divisors (63490112).

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

28112448 is a wasteful number, since it uses less digits than its factorization.

28112448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1634 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 28112448 is about 5302.1173129232. The cubic root of 28112448 is about 304.0648522767.

The spelling of 28112448 in words is "twenty-eight million, one hundred twelve thousand, four hundred forty-eight".