20242222400 has 42 divisors (see below), whose sum is σ = 49808522430. Its totient is φ = 8096888320.

The previous prime is 20242222387. The next prime is 20242222433. The reversal of 20242222400 is 422224202.

It can be written as a sum of positive squares in 3 ways, for example, as 5566353664 + 14675868736 = 74608^2 + 121144^2 .

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 5 ways as a sum of consecutive naturals, for example, 6324095 + ... + 6327294.

Almost surely, 2^20242222400 is an apocalyptic number.

20242222400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20242222400 is an abundant number, since it is smaller than the sum of its proper divisors (29566300030).

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

20242222400 is a wasteful number, since it uses less digits than its factorization.

20242222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651411 (or 12651396 counting only the distinct ones).

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

Adding to 20242222400 its reverse (422224202), we get a palindrome (20664446602).

The spelling of 20242222400 in words is "twenty billion, two hundred forty-two million, two hundred twenty-two thousand, four hundred".