8173420 has 48 divisors (see below), whose sum is σ = 18315360. Its totient is φ = 3055104.

The previous prime is 8173387. The next prime is 8173423. The reversal of 8173420 is 243718.

It is not an unprimeable number, because it can be changed into a prime (8173423) 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, 51982 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (381570).

Almost surely, 2^8173420 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 8173420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9157680).

8173420 is an abundant number, since it is smaller than the sum of its proper divisors (10141940).

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

8173420 is a wasteful number, since it uses less digits than its factorization.

8173420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8173420 is about 2858.9193762679. The cubic root of 8173420 is about 201.4348481042.

The spelling of 8173420 in words is "eight million, one hundred seventy-three thousand, four hundred twenty".