20024431532 has 72 divisors (see below), whose sum is σ = 41080446288. Its totient is φ = 8515584000.

The previous prime is 20024431523. The next prime is 20024431541. The reversal of 20024431532 is 23513442002.

It is an interprime number because it is at equal distance from previous prime (20024431523) and next prime (20024431541).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16672532 + ... + 16673732.

It is an arithmetic number, because the mean of its divisors is an integer number (570561754).

Almost surely, 2^20024431532 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 20024431532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20540223144).

20024431532 is an abundant number, since it is smaller than the sum of its proper divisors (21056014756).

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

20024431532 is a wasteful number, since it uses less digits than its factorization.

20024431532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20024431532 its reverse (23513442002), we get a palindrome (43537873534).

The spelling of 20024431532 in words is "twenty billion, twenty-four million, four hundred thirty-one thousand, five hundred thirty-two".