8913840 has 80 divisors (see below), whose sum is σ = 29768928. Its totient is φ = 2193408.

The previous prime is 8913803. The next prime is 8913847. The reversal of 8913840 is 483198.

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

It is a super-3 number, since 3×8913840³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8913847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692 + ... + 4548.

Almost surely, 2^8913840 is an apocalyptic number.

8913840 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 8913840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14884464).

8913840 is an abundant number, since it is smaller than the sum of its proper divisors (20855088).

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

8913840 is a wasteful number, since it uses less digits than its factorization.

8913840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886 (or 2880 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8913840 is about 2985.6054662329. The cubic root of 8913840 is about 207.3424749183.

The spelling of 8913840 in words is "eight million, nine hundred thirteen thousand, eight hundred forty".