28679817 has 8 divisors (see below), whose sum is σ = 38265696. Its totient is φ = 19106912.

The previous prime is 28679809. The next prime is 28679843. The reversal of 28679817 is 71897682.

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 28679817 - 2³ = 28679809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28679857) 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, 4693 + ... + 8909.

It is an arithmetic number, because the mean of its divisors is an integer number (4783212).

Almost surely, 2^28679817 is an apocalyptic number.

It is an amenable number.

28679817 is a deficient number, since it is larger than the sum of its proper divisors (9585879).

28679817 is a wasteful number, since it uses less digits than its factorization.

28679817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487.

The product of its digits is 338688, while the sum is 48.

The square root of 28679817 is about 5355.3540499205. The cubic root of 28679817 is about 306.0968017888.

The spelling of 28679817 in words is "twenty-eight million, six hundred seventy-nine thousand, eight hundred seventeen".