8181284 has 24 divisors (see below), whose sum is σ = 15821568. Its totient is φ = 3681920.

The previous prime is 8181281. The next prime is 8181287. The reversal of 8181284 is 4821818.

It is an interprime number because it is at equal distance from previous prime (8181281) and next prime (8181287).

It is a self number, because there is not a number n which added to its sum of digits gives 8181284.

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 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 4179.

It is an arithmetic number, because the mean of its divisors is an integer number (659232).

Almost surely, 2^8181284 is an apocalyptic number.

It is an amenable number.

8181284 is a deficient number, since it is larger than the sum of its proper divisors (7640284).

8181284 is a wasteful number, since it uses less digits than its factorization.

8181284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275 (or 5273 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 8181284 is about 2860.2943904431. The cubic root of 8181284 is about 201.4994304487.

The spelling of 8181284 in words is "eight million, one hundred eighty-one thousand, two hundred eighty-four".