28768117 has 8 divisors (see below), whose sum is σ = 32928896. Its totient is φ = 24620112.

The previous prime is 28768111. The next prime is 28768123. The reversal of 28768117 is 71186782.

It is an interprime number because it is at equal distance from previous prime (28768111) and next prime (28768123).

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 28768117 - 2¹¹ = 28766069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28768117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768111) 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, 2263 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (4116112).

Almost surely, 2^28768117 is an apocalyptic number.

It is an amenable number.

28768117 is a deficient number, since it is larger than the sum of its proper divisors (4160779).

28768117 is an equidigital number, since it uses as much as digits as its factorization.

28768117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387.

The product of its digits is 37632, while the sum is 40.

The square root of 28768117 is about 5363.5918002771. The cubic root of 28768117 is about 306.4106189524.

The spelling of 28768117 in words is "twenty-eight million, seven hundred sixty-eight thousand, one hundred seventeen".