20404242200 has 96 divisors (see below), whose sum is σ = 48211266960. Its totient is φ = 8030016000.

The previous prime is 20404242179. The next prime is 20404242233. The reversal of 20404242200 is 224240402.

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

It is a congruent number.

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, 3289502 + ... + 3295698.

Almost surely, 2^20404242200 is an apocalyptic number.

20404242200 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 20404242200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24105633480).

20404242200 is an abundant number, since it is smaller than the sum of its proper divisors (27807024760).

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

20404242200 is a wasteful number, since it uses less digits than its factorization.

20404242200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477 (or 6468 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20404242200 its reverse (224240402), we get a palindrome (20628482602).

The spelling of 20404242200 in words is "twenty billion, four hundred four million, two hundred forty-two thousand, two hundred".