20344043000 has 64 divisors (see below), whose sum is σ = 48891772800. Its totient is φ = 7917667200.

The previous prime is 20344042991. The next prime is 20344043009. The reversal of 20344043000 is 34044302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20344042991) and next prime (20344043009).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344043009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237920 + ... + 311919.

It is an arithmetic number, because the mean of its divisors is an integer number (763933950).

Almost surely, 2^20344043000 is an apocalyptic number.

20344043000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344043000 is an abundant number, since it is smaller than the sum of its proper divisors (28547729800).

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

20344043000 is a wasteful number, since it uses less digits than its factorization.

20344043000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549897 (or 549883 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20344043000 its reverse (34044302), we get a palindrome (20378087302).

The spelling of 20344043000 in words is "twenty billion, three hundred forty-four million, forty-three thousand".