10440018 has 12 divisors (see below), whose sum is σ = 22620078. Its totient is φ = 3480000.

The previous prime is 10440011. The next prime is 10440019. The reversal of 10440018 is 81004401.

It can be written as a sum of positive squares in only one way, i.e., 5890329 + 4549689 = 2427^2 + 2133^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 580001 = 10440018 / (1 + 0 + 4 + 4 + 0 + 0 + 1 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10440011) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 289983 + ... + 290018.

Almost surely, 2^10440018 is an apocalyptic number.

10440018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10440018 is an abundant number, since it is smaller than the sum of its proper divisors (12180060).

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

10440018 is a wasteful number, since it uses less digits than its factorization.

10440018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580009 (or 580006 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 10440018 is about 3231.1016697096. The cubic root of 10440018 is about 218.5581885391.

Adding to 10440018 its reverse (81004401), we get a palindrome (91444419).

The spelling of 10440018 in words is "ten million, four hundred forty thousand, eighteen".