28866395 has 4 divisors (see below), whose sum is σ = 34639680. Its totient is φ = 23093112.

The previous prime is 28866389. The next prime is 28866427. The reversal of 28866395 is 59366882.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28866395 - 2⁴ = 28866379 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, 2886635 + ... + 2886644.

It is an arithmetic number, because the mean of its divisors is an integer number (8659920).

Almost surely, 2^28866395 is an apocalyptic number.

28866395 is a deficient number, since it is larger than the sum of its proper divisors (5773285).

28866395 is an equidigital number, since it uses as much as digits as its factorization.

28866395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773284.

The product of its digits is 622080, while the sum is 47.

The square root of 28866395 is about 5372.7455737267. The cubic root of 28866395 is about 306.7591436341.

The spelling of 28866395 in words is "twenty-eight million, eight hundred sixty-six thousand, three hundred ninety-five".