8791040 has 88 divisors (see below), whose sum is σ = 22549752. Its totient is φ = 3276800.

The previous prime is 8791019. The next prime is 8791051. The reversal of 8791040 is 401978.

It can be written as a sum of positive squares in 4 ways, for example, as 4194304 + 4596736 = 2048^2 + 2144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8790994 and 8791012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86990 + ... + 87090.

Almost surely, 2^8791040 is an apocalyptic number.

8791040 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 8791040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11274876).

8791040 is an abundant number, since it is smaller than the sum of its proper divisors (13758712).

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

8791040 is a wasteful number, since it uses less digits than its factorization.

8791040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8791040 is about 2964.9688025340. The cubic root of 8791040 is about 206.3859293735.

The spelling of 8791040 in words is "eight million, seven hundred ninety-one thousand, forty".