28489115 has 8 divisors (see below), whose sum is σ = 34226880. Its totient is φ = 22764672.

The previous prime is 28489099. The next prime is 28489129. The reversal of 28489115 is 51198482.

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 28489115 - 2⁴ = 28489099 is a prime.

It is a super-3 number, since 3×28489115³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (4278360).

Almost surely, 2^28489115 is an apocalyptic number.

28489115 is a deficient number, since it is larger than the sum of its proper divisors (5737765).

28489115 is a wasteful number, since it uses less digits than its factorization.

28489115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661.

The product of its digits is 23040, while the sum is 38.

The square root of 28489115 is about 5337.5195549993. The cubic root of 28489115 is about 305.4168447106.

The spelling of 28489115 in words is "twenty-eight million, four hundred eighty-nine thousand, one hundred fifteen".