8181294 has 48 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 2424400.

The previous prime is 8181287. The next prime is 8181311. The reversal of 8181294 is 4921818.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42739 + ... + 42929.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^8181294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8181294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9192960).

8181294 is an abundant number, since it is smaller than the sum of its proper divisors (10204626).

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

8181294 is a wasteful number, since it uses less digits than its factorization.

8181294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 266 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 8181294 is about 2860.2961385143. The cubic root of 8181294 is about 201.4995125464.

It can be divided in two parts, 818 and 1294, that added together give a palindrome (2112).

The spelling of 8181294 in words is "eight million, one hundred eighty-one thousand, two hundred ninety-four".