20423839744 has 351 divisors, whose sum is σ = 54085590741. Its totient is φ = 7682949120.

The previous prime is 20423839741. The next prime is 20423839757. The reversal of 20423839744 is 44793832402.

The square root of 20423839744 is 142912.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10709766144 + 9714073600 = 103488^2 + 98560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20423839694 and 20423839703.

It is not an unprimeable number, because it can be changed into a prime (20423839741) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 704270322 + ... + 704270350.

Almost surely, 2^20423839744 is an apocalyptic number.

20423839744 is the 142912-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20423839744

20423839744 is an abundant number, since it is smaller than the sum of its proper divisors (33661750997).

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

20423839744 is an equidigital number, since it uses as much as digits as its factorization.

20423839744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 20423839744 in words is "twenty billion, four hundred twenty-three million, eight hundred thirty-nine thousand, seven hundred forty-four".