28162012 has 12 divisors (see below), whose sum is σ = 50873536. Its totient is φ = 13626720.

The previous prime is 28162007. The next prime is 28162019. The reversal of 28162012 is 21026182.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28162019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113433 + ... + 113680.

Almost surely, 2^28162012 is an apocalyptic number.

It is an amenable number.

28162012 is a deficient number, since it is larger than the sum of its proper divisors (22711524).

28162012 is a wasteful number, since it uses less digits than its factorization.

28162012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227148 (or 227146 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28162012 is about 5306.7892364404. The cubic root of 28162012 is about 304.2434424652.

Adding to 28162012 its reverse (21026182), we get a palindrome (49188194).

The spelling of 28162012 in words is "twenty-eight million, one hundred sixty-two thousand, twelve".