28354012 has 12 divisors (see below), whose sum is σ = 49894936. Its totient is φ = 14098320.

The previous prime is 28353989. The next prime is 28354021. The reversal of 28354012 is 21045382.

It is a super-2 number, since 2×28354012² = 1607899992992288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 18858 + ... + 20305.

Almost surely, 2^28354012 is an apocalyptic number.

It is an amenable number.

28354012 is a deficient number, since it is larger than the sum of its proper divisors (21540924).

28354012 is a wasteful number, since it uses less digits than its factorization.

28354012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39348 (or 39346 counting only the distinct ones).

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

The square root of 28354012 is about 5324.8485424470. The cubic root of 28354012 is about 304.9332900774.

Adding to 28354012 its reverse (21045382), we get a palindrome (49399394).

The spelling of 28354012 in words is "twenty-eight million, three hundred fifty-four thousand, twelve".