10440020 has 24 divisors (see below), whose sum is σ = 22129800. Its totient is φ = 4136832.

The previous prime is 10440019. The next prime is 10440037. The reversal of 10440020 is 2004401.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 10163344 = 526^2 + 3188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10439983 and 10440010.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 215 + ... + 4574.

It is an arithmetic number, because the mean of its divisors is an integer number (922075).

Almost surely, 2^10440020 is an apocalyptic number.

10440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10440020 is an abundant number, since it is smaller than the sum of its proper divisors (11689780).

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

10440020 is a wasteful number, since it uses less digits than its factorization.

10440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907 (or 4905 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10440020 is about 3231.1019792015. The cubic root of 10440020 is about 218.5582024955.

Adding to 10440020 its reverse (2004401), we get a palindrome (12444421).

The spelling of 10440020 in words is "ten million, four hundred forty thousand, twenty".