28686914 has 16 divisors (see below), whose sum is σ = 44618688. Its totient is φ = 13821552.

The previous prime is 28686913. The next prime is 28686919. The reversal of 28686914 is 41968682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28686913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6107 + ... + 9729.

It is an arithmetic number, because the mean of its divisors is an integer number (2788668).

Almost surely, 2^28686914 is an apocalyptic number.

28686914 is a deficient number, since it is larger than the sum of its proper divisors (15931774).

28686914 is a wasteful number, since it uses less digits than its factorization.

28686914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769.

The product of its digits is 165888, while the sum is 44.

The square root of 28686914 is about 5356.0166168525. The cubic root of 28686914 is about 306.1220482288.

The spelling of 28686914 in words is "twenty-eight million, six hundred eighty-six thousand, nine hundred fourteen".