28332566 has 8 divisors (see below), whose sum is σ = 42531024. Its totient is φ = 14155560.

The previous prime is 28332547. The next prime is 28332589. The reversal of 28332566 is 66523382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28332566² = 1605468592288712, which contains 22 as substring.

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, 1505 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (5316378).

Almost surely, 2^28332566 is an apocalyptic number.

28332566 is a deficient number, since it is larger than the sum of its proper divisors (14198458).

28332566 is a wasteful number, since it uses less digits than its factorization.

28332566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10726.

The product of its digits is 51840, while the sum is 35.

The square root of 28332566 is about 5322.8343953198. The cubic root of 28332566 is about 304.8563903332.

The spelling of 28332566 in words is "twenty-eight million, three hundred thirty-two thousand, five hundred sixty-six".