28300224 has 28 divisors (see below), whose sum is σ = 74878184. Its totient is φ = 9433344.

The previous prime is 28300219. The next prime is 28300231. The reversal of 28300224 is 42200382.

It is a self number, because there is not a number n which added to its sum of digits gives 28300224.

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, 73507 + ... + 73890.

Almost surely, 2^28300224 is an apocalyptic number.

28300224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28300224 is an abundant number, since it is smaller than the sum of its proper divisors (46577960).

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

28300224 is a wasteful number, since it uses less digits than its factorization.

28300224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147412 (or 147402 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 28300224 is about 5319.7954847907. The cubic root of 28300224 is about 304.7403469622.

The spelling of 28300224 in words is "twenty-eight million, three hundred thousand, two hundred twenty-four".