8854561280 has 80 divisors (see below), whose sum is σ = 21521472984. Its totient is φ = 3493232640.

The previous prime is 8854561267. The next prime is 8854561337. The reversal of 8854561280 is 821654588.

It can be written as a sum of positive squares in 4 ways, for example, as 8525936896 + 328624384 = 92336^2 + 18128^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×8854561280² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163190 + ... + 210570.

Almost surely, 2^8854561280 is an apocalyptic number.

8854561280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8854561280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10760736492).

8854561280 is an abundant number, since it is smaller than the sum of its proper divisors (12666911704).

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

8854561280 is an equidigital number, since it uses as much as digits as its factorization.

8854561280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47477 (or 47461 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The square root of 8854561280 is about 94098.6784179247. The cubic root of 8854561280 is about 2068.8183006934.

The spelling of 8854561280 in words is "eight billion, eight hundred fifty-four million, five hundred sixty-one thousand, two hundred eighty".