28666594 has 12 divisors (see below), whose sum is σ = 47264742. Its totient is φ = 13030160.

The previous prime is 28666591. The next prime is 28666609. The reversal of 28666594 is 49566682.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 13417569 = 3905^2 + 3663^2 .

It is a super-2 number, since 2×28666594² = 1643547223121672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28666591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58987 + ... + 59470.

Almost surely, 2^28666594 is an apocalyptic number.

28666594 is a deficient number, since it is larger than the sum of its proper divisors (18598148).

28666594 is a wasteful number, since it uses less digits than its factorization.

28666594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118481 (or 118470 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 28666594 is about 5354.1193486884. The cubic root of 28666594 is about 306.0497519743.

The spelling of 28666594 in words is "twenty-eight million, six hundred sixty-six thousand, five hundred ninety-four".