28224824 has 8 divisors (see below), whose sum is σ = 52921560. Its totient is φ = 14112408.

The previous prime is 28224817. The next prime is 28224827. The reversal of 28224824 is 42842282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 (28224827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1764044 + ... + 1764059.

It is an arithmetic number, because the mean of its divisors is an integer number (6615195).

Almost surely, 2^28224824 is an apocalyptic number.

It is an amenable number.

28224824 is a deficient number, since it is larger than the sum of its proper divisors (24696736).

28224824 is a wasteful number, since it uses less digits than its factorization.

28224824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528109 (or 3528105 counting only the distinct ones).

The product of its digits is 16384, while the sum is 32.

The square root of 28224824 is about 5312.7040196119. The cubic root of 28224824 is about 304.4694673797.

The spelling of 28224824 in words is "twenty-eight million, two hundred twenty-four thousand, eight hundred twenty-four".