28086169 has 8 divisors (see below), whose sum is σ = 28668800. Its totient is φ = 27507600.

The previous prime is 28086137. The next prime is 28086203. The reversal of 28086169 is 96168082.

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

It is a cyclic number.

It is not a de Polignac number, because 28086169 - 2⁵ = 28086137 is a prime.

It is a super-2 number, since 2×28086169² = 1577665778193122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28086469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15682 + ... + 17380.

It is an arithmetic number, because the mean of its divisors is an integer number (3583600).

Almost surely, 2^28086169 is an apocalyptic number.

It is an amenable number.

28086169 is a deficient number, since it is larger than the sum of its proper divisors (582631).

28086169 is a wasteful number, since it uses less digits than its factorization.

28086169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28086169 is about 5299.6385725821. The cubic root of 28086169 is about 303.9700779933.

The spelling of 28086169 in words is "twenty-eight million, eighty-six thousand, one hundred sixty-nine".