28134015 has 32 divisors (see below), whose sum is σ = 55405056. Its totient is φ = 11871360.

The previous prime is 28134013. The next prime is 28134053. The reversal of 28134015 is 51043182.

It is not a de Polignac number, because 28134015 - 2¹ = 28134013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8941 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (1731408).

Almost surely, 2^28134015 is an apocalyptic number.

28134015 is a deficient number, since it is larger than the sum of its proper divisors (27271041).

28134015 is a wasteful number, since it uses less digits than its factorization.

28134015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20639.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28134015 is about 5304.1507331523. The cubic root of 28134015 is about 304.1425887823.

Adding to 28134015 its reverse (51043182), we get a palindrome (79177197).

The spelling of 28134015 in words is "twenty-eight million, one hundred thirty-four thousand, fifteen".