28230484 has 12 divisors (see below), whose sum is σ = 49719124. Its totient is φ = 14025024.

The previous prime is 28230481. The next prime is 28230493. The reversal of 28230484 is 48403282.

It can be written as a sum of positive squares in 2 ways, for example, as 21418384 + 6812100 = 4628^2 + 2610^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21849 + ... + 23104.

Almost surely, 2^28230484 is an apocalyptic number.

It is an amenable number.

28230484 is a deficient number, since it is larger than the sum of its proper divisors (21488640).

28230484 is a wasteful number, since it uses less digits than its factorization.

28230484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45114 (or 45112 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 28230484 is about 5313.2366783346. The cubic root of 28230484 is about 304.4898180469.

The spelling of 28230484 in words is "twenty-eight million, two hundred thirty thousand, four hundred eighty-four".