28230318 has 12 divisors (see below), whose sum is σ = 61165728. Its totient is φ = 9410100.

The previous prime is 28230299. The next prime is 28230329. The reversal of 28230318 is 81303282.

It is a super-2 number, since 2×28230318² = 1593901708762248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28230291 and 28230300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 784158 + ... + 784193.

It is an arithmetic number, because the mean of its divisors is an integer number (5097144).

Almost surely, 2^28230318 is an apocalyptic number.

28230318 is an abundant number, since it is smaller than the sum of its proper divisors (32935410).

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

28230318 is a wasteful number, since it uses less digits than its factorization.

28230318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568359 (or 1568356 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28230318 is about 5313.2210569484. The cubic root of 28230318 is about 304.4892212286.

The spelling of 28230318 in words is "twenty-eight million, two hundred thirty thousand, three hundred eighteen".