20424200000 has 84 divisors (see below), whose sum is σ = 50658843564. Its totient is φ = 8169600000.

The previous prime is 20424199997. The next prime is 20424200021. The reversal of 20424200000 is 242402.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20211740224 + 212459776 = 142168^2 + 14576^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148940 + ... + 251060.

It is an arithmetic number, because the mean of its divisors is an integer number (603081471).

Almost surely, 2^20424200000 is an apocalyptic number.

20424200000 is a gapful number since it is divisible by the number (20) 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 20424200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25329421782).

20424200000 is an abundant number, since it is smaller than the sum of its proper divisors (30234643564).

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

20424200000 is an frugal number, since it uses more digits than its factorization.

20424200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102158 (or 102128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20424200000 its reverse (242402), we get a palindrome (20424442402).

The spelling of 20424200000 in words is "twenty billion, four hundred twenty-four million, two hundred thousand".