20424041430 has 128 divisors (see below), whose sum is σ = 53593989120. Its totient is φ = 4951065600.

The previous prime is 20424041399. The next prime is 20424041441. The reversal of 20424041430 is 3414042402.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20424041430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18516259 + ... + 18517361.

It is an arithmetic number, because the mean of its divisors is an integer number (418703040).

Almost surely, 2^20424041430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20424041430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26796994560).

20424041430 is an abundant number, since it is smaller than the sum of its proper divisors (33169947690).

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

20424041430 is a wasteful number, since it uses less digits than its factorization.

20424041430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20424041430 its reverse (3414042402), we get a palindrome (23838083832).

The spelling of 20424041430 in words is "twenty billion, four hundred twenty-four million, forty-one thousand, four hundred thirty".