28282224 has 20 divisors (see below), whose sum is σ = 73062536. Its totient is φ = 9427392.

The previous prime is 28282217. The next prime is 28282253. The reversal of 28282224 is 42228282.

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 = 28282191 and 28282200.

It is a congruent number.

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, 294559 + ... + 294654.

Almost surely, 2^28282224 is an apocalyptic number.

28282224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28282224 is an abundant number, since it is smaller than the sum of its proper divisors (44780312).

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

28282224 is a wasteful number, since it uses less digits than its factorization.

28282224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589224 (or 589218 counting only the distinct ones).

The product of its digits is 8192, while the sum is 30.

The square root of 28282224 is about 5318.1034213336. The cubic root of 28282224 is about 304.6757245101.

The spelling of 28282224 in words is "twenty-eight million, two hundred eighty-two thousand, two hundred twenty-four".