28086694 has 4 divisors (see below), whose sum is σ = 42130044. Its totient is φ = 14043346.

The previous prime is 28086691. The next prime is 28086701. The reversal of 28086694 is 49668082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49668082 = 2 ⋅24834041.

It is a self number, because there is not a number n which added to its sum of digits gives 28086694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28086691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7021672 + ... + 7021675.

It is an arithmetic number, because the mean of its divisors is an integer number (10532511).

Almost surely, 2^28086694 is an apocalyptic number.

28086694 is a deficient number, since it is larger than the sum of its proper divisors (14043350).

28086694 is a wasteful number, since it uses less digits than its factorization.

28086694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043349.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 28086694 is about 5299.6881040303. The cubic root of 28086694 is about 303.9719719658.

The spelling of 28086694 in words is "twenty-eight million, eighty-six thousand, six hundred ninety-four".