28224672 has 96 divisors (see below), whose sum is σ = 85744512. Its totient is φ = 7962624.

The previous prime is 28224661. The next prime is 28224697. The reversal of 28224672 is 27642282.

It is a tau number, because it is divible by the number of its divisors (96).

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, 64968 + ... + 65400.

It is an arithmetic number, because the mean of its divisors is an integer number (893172).

Almost surely, 2^28224672 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 28224672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42872256).

28224672 is an abundant number, since it is smaller than the sum of its proper divisors (57519840).

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

28224672 is a wasteful number, since it uses less digits than its factorization.

28224672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 542 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 28224672 is about 5312.6897142596. The cubic root of 28224672 is about 304.4689208225.

The spelling of 28224672 in words is "twenty-eight million, two hundred twenty-four thousand, six hundred seventy-two".