28119817 has 8 divisors (see below), whose sum is σ = 31021920. Its totient is φ = 25275360.

The previous prime is 28119811. The next prime is 28119827. The reversal of 28119817 is 71891182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28119817 - 2¹¹ = 28117769 is a prime.

It is a super-2 number, since 2×28119817² = 1581448216226978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28119811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13383 + ... + 15340.

It is an arithmetic number, because the mean of its divisors is an integer number (3877740).

Almost surely, 2^28119817 is an apocalyptic number.

It is an amenable number.

28119817 is a deficient number, since it is larger than the sum of its proper divisors (2902103).

28119817 is a wasteful number, since it uses less digits than its factorization.

28119817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28823.

The product of its digits is 8064, while the sum is 37.

The square root of 28119817 is about 5302.8121784578. The cubic root of 28119817 is about 304.0914177108.

The spelling of 28119817 in words is "twenty-eight million, one hundred nineteen thousand, eight hundred seventeen".