8180838 has 56 divisors (see below), whose sum is σ = 19096896. Its totient is φ = 2624400.

The previous prime is 8180789. The next prime is 8180857. The reversal of 8180838 is 8380818.

It is a super-2 number, since 2×8180838² = 133852220764488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45108 + ... + 45288.

It is an arithmetic number, because the mean of its divisors is an integer number (341016).

Almost surely, 2^8180838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8180838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9548448).

8180838 is an abundant number, since it is smaller than the sum of its proper divisors (10916058).

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

8180838 is a wasteful number, since it uses less digits than its factorization.

8180838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 8180838 is about 2860.2164253776. The cubic root of 8180838 is about 201.4957688238.

The spelling of 8180838 in words is "eight million, one hundred eighty thousand, eight hundred thirty-eight".