28764229788672 has 528 divisors, whose sum is σ = 93796026531840. Its totient is φ = 7799014637568.

The previous prime is 28764229788641. The next prime is 28764229788709. The reversal of 28764229788672 is 27688792246782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 439659579 + ... + 439724997.

Almost surely, 2^{28764229788672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28764229788672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46898013265920).

28764229788672 is an abundant number, since it is smaller than the sum of its proper divisors (65031796743168).

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

28764229788672 is a wasteful number, since it uses less digits than its factorization.

28764229788672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65606 (or 65581 counting only the distinct ones).

The product of its digits is 3641573376, while the sum is 78.

The spelling of 28764229788672 in words is "twenty-eight trillion, seven hundred sixty-four billion, two hundred twenty-nine million, seven hundred eighty-eight thousand, six hundred seventy-two".