8947158 has 32 divisors (see below), whose sum is σ = 20155392. Its totient is φ = 2623200.

The previous prime is 8947153. The next prime is 8947171. The reversal of 8947158 is 8517498.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947153) 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, 141 + ... + 4232.

It is an arithmetic number, because the mean of its divisors is an integer number (629856).

Almost surely, 2^8947158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8947158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10077696).

8947158 is an abundant number, since it is smaller than the sum of its proper divisors (11208234).

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

8947158 is a wasteful number, since it uses less digits than its factorization.

8947158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420.

The product of its digits is 80640, while the sum is 42.

The square root of 8947158 is about 2991.1800347020. The cubic root of 8947158 is about 207.6004874488.

The spelling of 8947158 in words is "eight million, nine hundred forty-seven thousand, one hundred fifty-eight".