28134212 has 24 divisors (see below), whose sum is σ = 53037600. Its totient is φ = 13015296.

The previous prime is 28134181. The next prime is 28134217. The reversal of 28134212 is 21243182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28134217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 7572.

It is an arithmetic number, because the mean of its divisors is an integer number (2209900).

Almost surely, 2^28134212 is an apocalyptic number.

It is an amenable number.

28134212 is a deficient number, since it is larger than the sum of its proper divisors (24903388).

28134212 is a wasteful number, since it uses less digits than its factorization.

28134212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8675 (or 8673 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 28134212 is about 5304.1693034819. The cubic root of 28134212 is about 304.1432986697.

Adding to 28134212 its reverse (21243182), we get a palindrome (49377394).

The spelling of 28134212 in words is "twenty-eight million, one hundred thirty-four thousand, two hundred twelve".