20344503232 has 56 divisors (see below), whose sum is σ = 42646803200. Its totient is φ = 9602654976.

The previous prime is 20344503149. The next prime is 20344503233. The reversal of 20344503232 is 23230544302.

It is a self number, because there is not a number n which added to its sum of digits gives 20344503232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344503233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314569 + ... + 373687.

Almost surely, 2^20344503232 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 20344503232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21323401600).

20344503232 is an abundant number, since it is smaller than the sum of its proper divisors (22302299968).

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

20344503232 is a wasteful number, since it uses less digits than its factorization.

20344503232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59433 (or 59423 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 28.

The spelling of 20344503232 in words is "twenty billion, three hundred forty-four million, five hundred three thousand, two hundred thirty-two".