20434023200 has 36 divisors (see below), whose sum is σ = 49884561090. Its totient is φ = 8173608960.

The previous prime is 20434023191. The next prime is 20434023217. The reversal of 20434023200 is 232043402.

It can be written as a sum of positive squares in 3 ways, for example, as 12203179024 + 8230844176 = 110468^2 + 90724^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12770465 + ... + 12772064.

Almost surely, 2^20434023200 is an apocalyptic number.

20434023200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20434023200 is an abundant number, since it is smaller than the sum of its proper divisors (29450537890).

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

20434023200 is a wasteful number, since it uses less digits than its factorization.

20434023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25542549 (or 25542536 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20434023200 its reverse (232043402), we get a palindrome (20666066602).

The spelling of 20434023200 in words is "twenty billion, four hundred thirty-four million, twenty-three thousand, two hundred".