28034212 has 12 divisors (see below), whose sum is σ = 49216860. Its totient is φ = 13972256.

The previous prime is 28034189. The next prime is 28034219. The reversal of 28034212 is 21243082.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 25644096 = 1546^2 + 5064^2 .

It is not an unprimeable number, because it can be changed into a prime (28034219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9787 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (4101405).

Almost surely, 2^28034212 is an apocalyptic number.

It is an amenable number.

28034212 is a deficient number, since it is larger than the sum of its proper divisors (21182648).

28034212 is a wasteful number, since it uses less digits than its factorization.

28034212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22430 (or 22428 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28034212 is about 5294.7343653860. The cubic root of 28034212 is about 303.7825227811.

Adding to 28034212 its reverse (21243082), we get a palindrome (49277294).

The spelling of 28034212 in words is "twenty-eight million, thirty-four thousand, two hundred twelve".