28230566 has 24 divisors (see below), whose sum is σ = 53051040. Its totient is φ = 11167632.

The previous prime is 28230563. The next prime is 28230569. The reversal of 28230566 is 66503282.

It is an interprime number because it is at equal distance from previous prime (28230563) and next prime (28230569).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9806 + ... + 12353.

It is an arithmetic number, because the mean of its divisors is an integer number (2210460).

Almost surely, 2^28230566 is an apocalyptic number.

28230566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28230566 is a deficient number, since it is larger than the sum of its proper divisors (24820474).

28230566 is a wasteful number, since it uses less digits than its factorization.

28230566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22188 (or 22181 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 28230566 is about 5313.2443949060. The cubic root of 28230566 is about 304.4901128599.

The spelling of 28230566 in words is "twenty-eight million, two hundred thirty thousand, five hundred sixty-six".