20023192434 has 64 divisors (see below), whose sum is σ = 46881838080. Its totient is φ = 5581880640.

The previous prime is 20023192421. The next prime is 20023192439. The reversal of 20023192434 is 43429132002.

It is not an unprimeable number, because it can be changed into a prime (20023192439) 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 31 ways as a sum of consecutive naturals, for example, 1838497 + ... + 1849355.

It is an arithmetic number, because the mean of its divisors is an integer number (732528720).

Almost surely, 2^20023192434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20023192434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23440919040).

20023192434 is an abundant number, since it is smaller than the sum of its proper divisors (26858645646).

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

20023192434 is a wasteful number, since it uses less digits than its factorization.

20023192434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935.

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 20023192434 in words is "twenty billion, twenty-three million, one hundred ninety-two thousand, four hundred thirty-four".