28996544904336 has 75 divisors (see below), whose sum is σ = 83924974605571. Its totient is φ = 9665450349984.

The previous prime is 28996544904331. The next prime is 28996544904337. The reversal of 28996544904336 is 63340944569982.

The square root of 28996544904336 is 5384844.

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

28996544904336 is a `hidden beast` number, since 2 + 8 + 9 + 9 + 6 + 544 + 9 + 0 + 43 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28996544904331) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 193779595 + ... + 193929173.

Almost surely, 2^{28996544904336} is an apocalyptic number.

28996544904336 is the 5384844-th square number.

It is an amenable number.

28996544904336 is an abundant number, since it is smaller than the sum of its proper divisors (54928429701235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28996544904336 is an frugal number, since it uses more digits than its factorization.

28996544904336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299178 (or 149584 counting only the distinct ones).

The product of its (nonzero) digits is 1209323520, while the sum is 72.

The spelling of 28996544904336 in words is "twenty-eight trillion, nine hundred ninety-six billion, five hundred forty-four million, nine hundred four thousand, three hundred thirty-six".