8181288 has 48 divisors (see below), whose sum is σ = 22308000. Its totient is φ = 2708640.

The previous prime is 8181287. The next prime is 8181311. The reversal of 8181288 is 8821818.

It is a happy number.

8181288 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8181281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14043 + ... + 14613.

It is an arithmetic number, because the mean of its divisors is an integer number (464750).

Almost surely, 2^8181288 is an apocalyptic number.

It is an amenable number.

8181288 is an abundant number, since it is smaller than the sum of its proper divisors (14126712).

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

8181288 is a wasteful number, since it uses less digits than its factorization.

8181288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 775 counting only the distinct ones).

The product of its digits is 8192, while the sum is 36.

The square root of 8181288 is about 2860.2950896717. The cubic root of 8181288 is about 201.4994632878.

The spelling of 8181288 in words is "eight million, one hundred eighty-one thousand, two hundred eighty-eight".