20341420440 has 128 divisors (see below), whose sum is σ = 68371326720. Its totient is φ = 4797964800.

The previous prime is 20341420433. The next prime is 20341420441. The reversal of 20341420440 is 4402414302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20341420440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341420441) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 159406 + ... + 257085.

It is an arithmetic number, because the mean of its divisors is an integer number (534150990).

Almost surely, 2^20341420440 is an apocalyptic number.

20341420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20341420440 is an abundant number, since it is smaller than the sum of its proper divisors (48029906280).

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

20341420440 is a wasteful number, since it uses less digits than its factorization.

20341420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416553 (or 416549 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20341420440 its reverse (4402414302), we get a palindrome (24743834742).

The spelling of 20341420440 in words is "twenty billion, three hundred forty-one million, four hundred twenty thousand, four hundred forty".