8161326 has 48 divisors (see below), whose sum is σ = 18954000. Its totient is φ = 2529024.

The previous prime is 8161319. The next prime is 8161333. The reversal of 8161326 is 6231618.

It is an interprime number because it is at equal distance from previous prime (8161319) and next prime (8161333).

It is a self number, because there is not a number n which added to its sum of digits gives 8161326.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 45505 + ... + 45683.

It is an arithmetic number, because the mean of its divisors is an integer number (394875).

Almost surely, 2^8161326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8161326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9477000).

8161326 is an abundant number, since it is smaller than the sum of its proper divisors (10792674).

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

8161326 is a wasteful number, since it uses less digits than its factorization.

8161326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 350 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 8161326 is about 2856.8034584129. The cubic root of 8161326 is about 201.3354464007.

The spelling of 8161326 in words is "eight million, one hundred sixty-one thousand, three hundred twenty-six".