8018440 has 16 divisors (see below), whose sum is σ = 18041580. Its totient is φ = 3207360.

The previous prime is 8018419. The next prime is 8018443. The reversal of 8018440 is 448108.

It can be written as a sum of positive squares in 2 ways, for example, as 7963684 + 54756 = 2822^2 + 234^2 .

It is not an unprimeable number, because it can be changed into a prime (8018443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100191 + ... + 100270.

Almost surely, 2^8018440 is an apocalyptic number.

It is an amenable number.

8018440 is an abundant number, since it is smaller than the sum of its proper divisors (10023140).

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

8018440 is a wasteful number, since it uses less digits than its factorization.

8018440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200472 (or 200468 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 8018440 is about 2831.6850107312. The cubic root of 8018440 is about 200.1535487504.

The spelling of 8018440 in words is "eight million, eighteen thousand, four hundred forty".