28666195 has 4 divisors (see below), whose sum is σ = 34399440. Its totient is φ = 22932952.

The previous prime is 28666189. The next prime is 28666201. The reversal of 28666195 is 59166682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59166682 = 2 ⋅29583341.

It is an interprime number because it is at equal distance from previous prime (28666189) and next prime (28666201).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28666195 is a prime.

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, 2866615 + ... + 2866624.

It is an arithmetic number, because the mean of its divisors is an integer number (8599860).

Almost surely, 2^28666195 is an apocalyptic number.

28666195 is a deficient number, since it is larger than the sum of its proper divisors (5733245).

28666195 is an equidigital number, since it uses as much as digits as its factorization.

28666195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5733244.

The product of its digits is 155520, while the sum is 43.

The square root of 28666195 is about 5354.0820875291. The cubic root of 28666195 is about 306.0483320356.

The spelling of 28666195 in words is "twenty-eight million, six hundred sixty-six thousand, one hundred ninety-five".