8191340 has 36 divisors (see below), whose sum is σ = 17852016. Its totient is φ = 3157056.

The previous prime is 8191333. The next prime is 8191343. The reversal of 8191340 is 431918.

It is not an unprimeable number, because it can be changed into a prime (8191343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16577 + ... + 17063.

Almost surely, 2^8191340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8191340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8926008).

8191340 is an abundant number, since it is smaller than the sum of its proper divisors (9660676).

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

8191340 is a wasteful number, since it uses less digits than its factorization.

8191340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 8191340 is about 2862.0517116223. The cubic root of 8191340 is about 201.5819541145.

The spelling of 8191340 in words is "eight million, one hundred ninety-one thousand, three hundred forty".