8172416 has 48 divisors (see below), whose sum is σ = 18953640. Its totient is φ = 3499776.

The previous prime is 8172391. The next prime is 8172419. The reversal of 8172416 is 6142718.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5621 + ... + 6923.

Almost surely, 2^8172416 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 8172416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9476820).

8172416 is an abundant number, since it is smaller than the sum of its proper divisors (10781224).

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

8172416 is a wasteful number, since it uses less digits than its factorization.

8172416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1312 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 8172416 is about 2858.7437800544. The cubic root of 8172416 is about 201.4265998691.

The spelling of 8172416 in words is "eight million, one hundred seventy-two thousand, four hundred sixteen".