28488448 has 36 divisors (see below), whose sum is σ = 59868760. Its totient is φ = 13492224.

The previous prime is 28488437. The next prime is 28488457. The reversal of 28488448 is 84488482.

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

It is a junction number, because it is equal to n+sod(n) for n = 28488398 and 28488407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936 + ... + 7792.

Almost surely, 2^28488448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28488448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29934380).

28488448 is an abundant number, since it is smaller than the sum of its proper divisors (31380312).

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

28488448 is an equidigital number, since it uses as much as digits as its factorization.

28488448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892 (or 5878 counting only the distinct ones).

The product of its digits is 524288, while the sum is 46.

The square root of 28488448 is about 5337.4570724269. The cubic root of 28488448 is about 305.4144611731.

The spelling of 28488448 in words is "twenty-eight million, four hundred eighty-eight thousand, four hundred forty-eight".