28866119 has 4 divisors (see below), whose sum is σ = 30564144. Its totient is φ = 27168096.

The previous prime is 28866109. The next prime is 28866151. The reversal of 28866119 is 91166882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91166882 = 2 ⋅45583441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28866119 is a prime.

It is a super-2 number, since 2×28866119² = 1666505652244322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848987 + ... + 849020.

It is an arithmetic number, because the mean of its divisors is an integer number (7641036).

Almost surely, 2^28866119 is an apocalyptic number.

28866119 is a deficient number, since it is larger than the sum of its proper divisors (1698025).

28866119 is a wasteful number, since it uses less digits than its factorization.

28866119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698024.

The product of its digits is 41472, while the sum is 41.

The square root of 28866119 is about 5372.7198884736. The cubic root of 28866119 is about 306.7581659599.

The spelling of 28866119 in words is "twenty-eight million, eight hundred sixty-six thousand, one hundred nineteen".