8172418 has 8 divisors (see below), whose sum is σ = 12271248. Its totient is φ = 4082004.

The previous prime is 8172391. The next prime is 8172419. The reversal of 8172418 is 8142718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8172418.

It is not an unprimeable number, because it can be changed into a prime (8172419) 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, 1705 + ... + 4387.

It is an arithmetic number, because the mean of its divisors is an integer number (1533906).

Almost surely, 2^8172418 is an apocalyptic number.

8172418 is a deficient number, since it is larger than the sum of its proper divisors (4098830).

8172418 is a wasteful number, since it uses less digits than its factorization.

8172418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208.

The product of its digits is 3584, while the sum is 31.

The square root of 8172418 is about 2858.7441298584. The cubic root of 8172418 is about 201.4266163005.

The spelling of 8172418 in words is "eight million, one hundred seventy-two thousand, four hundred eighteen".