8917241280 has 56 divisors (see below), whose sum is σ = 28312244112. Its totient is φ = 2377930752.

The previous prime is 8917241279. The next prime is 8917241299. The reversal of 8917241280 is 821427198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4643437 + ... + 4645356.

Almost surely, 2^8917241280 is an apocalyptic number.

8917241280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8917241280 is an abundant number, since it is smaller than the sum of its proper divisors (19395002832).

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

8917241280 is a wasteful number, since it uses less digits than its factorization.

8917241280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9288813 (or 9288803 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 8917241280 is about 94431.1457094533. The cubic root of 8917241280 is about 2073.6884365622.

The spelling of 8917241280 in words is "eight billion, nine hundred seventeen million, two hundred forty-one thousand, two hundred eighty".