28780323176448 has 1024 divisors, whose sum is σ = 94924039680000. Its totient is φ = 8683910332416.

The previous prime is 28780323176417. The next prime is 28780323176477. The reversal of 28780323176448 is 84467132308782.

28780323176448 is a `hidden beast` number, since 2 + 87 + 80 + 3 + 2 + 31 + 7 + 6 + 448 = 666.

It is a tau number, because it is divible by the number of its divisors (1024).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31316999733 + ... + 31317000651.

It is an arithmetic number, because the mean of its divisors is an integer number (92699257500).

Almost surely, 2^{28780323176448} 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 28780323176448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47462019840000).

28780323176448 is an abundant number, since it is smaller than the sum of its proper divisors (66143716503552).

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

28780323176448 is an frugal number, since it uses more digits than its factorization.

28780323176448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 63.

The spelling of 28780323176448 in words is "twenty-eight trillion, seven hundred eighty billion, three hundred twenty-three million, one hundred seventy-six thousand, four hundred forty-eight".