20344376892 has 72 divisors (see below), whose sum is σ = 55543103616. Its totient is φ = 5677457184.

The previous prime is 20344376881. The next prime is 20344376893. The reversal of 20344376892 is 29867344302.

It is a super-2 number, since 2×20344376892² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344376893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89823 + ... + 220809.

Almost surely, 2^20344376892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344376892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27771551808).

20344376892 is an abundant number, since it is smaller than the sum of its proper divisors (35198726724).

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

20344376892 is a wasteful number, since it uses less digits than its factorization.

20344376892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131087 (or 131042 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 20344376892 in words is "twenty billion, three hundred forty-four million, three hundred seventy-six thousand, eight hundred ninety-two".