8791840 has 24 divisors (see below), whose sum is σ = 20771100. Its totient is φ = 3516672.

The previous prime is 8791801. The next prime is 8791847. The reversal of 8791840 is 481978.

It can be written as a sum of positive squares in 2 ways, for example, as 8549776 + 242064 = 2924^2 + 492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8791840.

It is not an unprimeable number, because it can be changed into a prime (8791847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27315 + ... + 27634.

Almost surely, 2^8791840 is an apocalyptic number.

8791840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8791840 is an abundant number, since it is smaller than the sum of its proper divisors (11979260).

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

8791840 is a wasteful number, since it uses less digits than its factorization.

8791840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54964 (or 54956 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 8791840 is about 2965.1037081357. The cubic root of 8791840 is about 206.3921896770.

The spelling of 8791840 in words is "eight million, seven hundred ninety-one thousand, eight hundred forty".