28516412 has 24 divisors (see below), whose sum is σ = 55139616. Its totient is φ = 12835328.

The previous prime is 28516409. The next prime is 28516457. The reversal of 28516412 is 21461582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7553 + ... + 10680.

It is an arithmetic number, because the mean of its divisors is an integer number (2297484).

Almost surely, 2^28516412 is an apocalyptic number.

It is an amenable number.

28516412 is a deficient number, since it is larger than the sum of its proper divisors (26623204).

28516412 is a wasteful number, since it uses less digits than its factorization.

28516412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18277 (or 18275 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 28516412 is about 5340.0760294213. The cubic root of 28516412 is about 305.5143591745.

Adding to 28516412 its reverse (21461582), we get a palindrome (49977994).

The spelling of 28516412 in words is "twenty-eight million, five hundred sixteen thousand, four hundred twelve".