8812643280 has 160 divisors (see below), whose sum is σ = 31255213824. Its totient is φ = 2012172288.

The previous prime is 8812643261. The next prime is 8812643291. The reversal of 8812643280 is 823462188.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2002042 + ... + 2006438.

Almost surely, 2^8812643280 is an apocalyptic number.

8812643280 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 8812643280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15627606912).

8812643280 is an abundant number, since it is smaller than the sum of its proper divisors (22442570544).

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

8812643280 is a wasteful number, since it uses less digits than its factorization.

8812643280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613 (or 5607 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 8812643280 is about 93875.6799176443. The cubic root of 8812643280 is about 2065.5485006889.

The spelling of 8812643280 in words is "eight billion, eight hundred twelve million, six hundred forty-three thousand, two hundred eighty".