28696867 has 16 divisors (see below), whose sum is σ = 31961952. Its totient is φ = 25643520.

The previous prime is 28696853. The next prime is 28696879. The reversal of 28696867 is 76869682.

It is a cyclic number.

It is not a de Polignac number, because 28696867 - 2⁷ = 28696739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28696807) 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 15 ways as a sum of consecutive naturals, for example, 26517 + ... + 27577.

It is an arithmetic number, because the mean of its divisors is an integer number (1997622).

Almost surely, 2^28696867 is an apocalyptic number.

28696867 is a deficient number, since it is larger than the sum of its proper divisors (3265085).

28696867 is a wasteful number, since it uses less digits than its factorization.

28696867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its digits is 1741824, while the sum is 52.

The square root of 28696867 is about 5356.9456782760. The cubic root of 28696867 is about 306.1574474175.

The spelling of 28696867 in words is "twenty-eight million, six hundred ninety-six thousand, eight hundred sixty-seven".