28512014 has 4 divisors (see below), whose sum is σ = 42768024. Its totient is φ = 14256006.

The previous prime is 28512013. The next prime is 28512023. The reversal of 28512014 is 41021582.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28512013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7128002 + ... + 7128005.

It is an arithmetic number, because the mean of its divisors is an integer number (10692006).

Almost surely, 2^28512014 is an apocalyptic number.

28512014 is a deficient number, since it is larger than the sum of its proper divisors (14256010).

28512014 is a wasteful number, since it uses less digits than its factorization.

28512014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14256009.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28512014 is about 5339.6642216529. The cubic root of 28512014 is about 305.4986521817.

Adding to 28512014 its reverse (41021582), we get a palindrome (69533596).

The spelling of 28512014 in words is "twenty-eight million, five hundred twelve thousand, fourteen".