28984624290656 has 12 divisors (see below), whose sum is σ = 57063479072292. Its totient is φ = 14492312145312.

The previous prime is 28984624290649. The next prime is 28984624290659. The reversal of 28984624290656 is 65609242648982.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28984624290656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28984624290659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452884754510 + ... + 452884754573.

It is an arithmetic number, because the mean of its divisors is an integer number (4755289922691).

Almost surely, 2^{28984624290656} is an apocalyptic number.

It is an amenable number.

28984624290656 is a deficient number, since it is larger than the sum of its proper divisors (28078854781636).

28984624290656 is an equidigital number, since it uses as much as digits as its factorization.

28984624290656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905769509093 (or 905769509085 counting only the distinct ones).

The product of its (nonzero) digits is 716636160, while the sum is 71.

The spelling of 28984624290656 in words is "twenty-eight trillion, nine hundred eighty-four billion, six hundred twenty-four million, two hundred ninety thousand, six hundred fifty-six".