28326566 has 4 divisors (see below), whose sum is σ = 42489852. Its totient is φ = 14163282.

The previous prime is 28326559. The next prime is 28326577. The reversal of 28326566 is 66562382.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7081640 + ... + 7081643.

It is an arithmetic number, because the mean of its divisors is an integer number (10622463).

Almost surely, 2^28326566 is an apocalyptic number.

28326566 is a deficient number, since it is larger than the sum of its proper divisors (14163286).

28326566 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 28326566 = (58263662)₉.

28326566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14163285.

The product of its digits is 103680, while the sum is 38.

The square root of 28326566 is about 5322.2707559838. The cubic root of 28326566 is about 304.8348689565.

The spelling of 28326566 in words is "twenty-eight million, three hundred twenty-six thousand, five hundred sixty-six".