28679965 has 16 divisors (see below), whose sum is σ = 36246528. Its totient is φ = 21742336.

The previous prime is 28679957. The next prime is 28679999. The reversal of 28679965 is 56997682.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28679965 - 2³ = 28679957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11892 + ... + 14098.

It is an arithmetic number, because the mean of its divisors is an integer number (2265408).

Almost surely, 2^28679965 is an apocalyptic number.

It is an amenable number.

28679965 is a deficient number, since it is larger than the sum of its proper divisors (7566563).

28679965 is a wasteful number, since it uses less digits than its factorization.

28679965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348.

The product of its digits is 1632960, while the sum is 52.

The square root of 28679965 is about 5355.3678678500. The cubic root of 28679965 is about 306.0973283176.

The spelling of 28679965 in words is "twenty-eight million, six hundred seventy-nine thousand, nine hundred sixty-five".