28684936412224 has 21 divisors (see below), whose sum is σ = 56921755716967. Its totient is φ = 14342446782784.

The previous prime is 28684936412161. The next prime is 28684936412273. The reversal of 28684936412224 is 42221463948682.

The square root of 28684936412224 is 5355832.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42511917 + ... + 43181395.

Almost surely, 2^{28684936412224} is an apocalyptic number.

28684936412224 is the 5355832-nd square number.

It is an amenable number.

28684936412224 is a deficient number, since it is larger than the sum of its proper divisors (28236819304743).

28684936412224 is an frugal number, since it uses more digits than its factorization.

28684936412224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338970 (or 669481 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 61.

The spelling of 28684936412224 in words is "twenty-eight trillion, six hundred eighty-four billion, nine hundred thirty-six million, four hundred twelve thousand, two hundred twenty-four".