28534012 has 36 divisors (see below), whose sum is σ = 55663608. Its totient is φ = 12722400.

The previous prime is 28534003. The next prime is 28534061. The reversal of 28534012 is 21043582.

It is a super-2 number, since 2×28534012² = 1628379681632288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49687 + ... + 50257.

Almost surely, 2^28534012 is an apocalyptic number.

It is an amenable number.

28534012 is a deficient number, since it is larger than the sum of its proper divisors (27129596).

28534012 is a wasteful number, since it uses less digits than its factorization.

28534012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28534012 is about 5341.7236918433. The cubic root of 28534012 is about 305.5771995589.

Adding to 28534012 its reverse (21043582), we get a palindrome (49577594).

The spelling of 28534012 in words is "twenty-eight million, five hundred thirty-four thousand, twelve".