3440140020 has 72 divisors (see below), whose sum is σ = 10451671776. Its totient is φ = 915913152.

The previous prime is 3440140003. The next prime is 3440140031. The reversal of 3440140020 is 200410443.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3440139975 and 3440140002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100879 + ... + 130601.

It is an arithmetic number, because the mean of its divisors is an integer number (145162108).

Almost surely, 2^3440140020 is an apocalyptic number.

3440140020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3440140020 is an abundant number, since it is smaller than the sum of its proper divisors (7011531756).

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

3440140020 is a wasteful number, since it uses less digits than its factorization.

3440140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30381 (or 30376 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3440140020 is about 58652.7068429071. The cubic root of 3440140020 is about 1509.5889441471.

Adding to 3440140020 its reverse (200410443), we get a palindrome (3640550463).

The spelling of 3440140020 in words is "three billion, four hundred forty million, one hundred forty thousand, twenty".