8491056 has 80 divisors (see below), whose sum is σ = 25784064. Its totient is φ = 2356992.

The previous prime is 8491051. The next prime is 8491061. The reversal of 8491056 is 6501948.

It is an interprime number because it is at equal distance from previous prime (8491051) and next prime (8491061).

It is not an unprimeable number, because it can be changed into a prime (8491051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12091 + ... + 12773.

Almost surely, 2^8491056 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 8491056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12892032).

8491056 is an abundant number, since it is smaller than the sum of its proper divisors (17293008).

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

8491056 is a wasteful number, since it uses less digits than its factorization.

8491056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8491056 is about 2913.9416603632. The cubic root of 8491056 is about 204.0111489485.

The spelling of 8491056 in words is "eight million, four hundred ninety-one thousand, fifty-six".