28134117 has 24 divisors (see below), whose sum is σ = 46668960. Its totient is φ = 16152480.

The previous prime is 28134103. The next prime is 28134121. The reversal of 28134117 is 71143182.

It is not a de Polignac number, because 28134117 - 2⁴ = 28134101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5598 + ... + 9359.

It is an arithmetic number, because the mean of its divisors is an integer number (1944540).

Almost surely, 2^28134117 is an apocalyptic number.

It is an amenable number.

28134117 is a deficient number, since it is larger than the sum of its proper divisors (18534843).

28134117 is a wasteful number, since it uses less digits than its factorization.

28134117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14993 (or 14990 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 28134117 is about 5304.1603482549. The cubic root of 28134117 is about 304.1429563386.

Adding to 28134117 its reverse (71143182), we get a palindrome (99277299).

The spelling of 28134117 in words is "twenty-eight million, one hundred thirty-four thousand, one hundred seventeen".