20372231424 has 72 divisors (see below), whose sum is σ = 54610202080. Its totient is φ = 6741854208.

The previous prime is 20372231423. The next prime is 20372231441. The reversal of 20372231424 is 42413227302.

It is a junction number, because it is equal to n+sod(n) for n = 20372231391 and 20372231400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372231423) 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, 11334 + ... + 202170.

Almost surely, 2^20372231424 is an apocalyptic number.

20372231424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372231424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27305101040).

20372231424 is an abundant number, since it is smaller than the sum of its proper divisors (34237970656).

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

20372231424 is a wasteful number, since it uses less digits than its factorization.

20372231424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190995 (or 190981 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 20372231424 its reverse (42413227302), we get a palindrome (62785458726).

The spelling of 20372231424 in words is "twenty billion, three hundred seventy-two million, two hundred thirty-one thousand, four hundred twenty-four".