28224548 has 12 divisors (see below), whose sum is σ = 53883312. Its totient is φ = 12829320.

The previous prime is 28224533. The next prime is 28224563. The reversal of 28224548 is 84542282.

It is an interprime number because it is at equal distance from previous prime (28224533) and next prime (28224563).

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, 320690 + ... + 320777.

It is an arithmetic number, because the mean of its divisors is an integer number (4490276).

Almost surely, 2^28224548 is an apocalyptic number.

It is an amenable number.

28224548 is a deficient number, since it is larger than the sum of its proper divisors (25658764).

28224548 is a wasteful number, since it uses less digits than its factorization.

28224548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641482 (or 641480 counting only the distinct ones).

The product of its digits is 40960, while the sum is 35.

The square root of 28224548 is about 5312.6780440753. The cubic root of 28224548 is about 304.4684749454.

The spelling of 28224548 in words is "twenty-eight million, two hundred twenty-four thousand, five hundred forty-eight".