22400240420 has 24 divisors (see below), whose sum is σ = 48041368704. Its totient is φ = 8769455456.

The previous prime is 22400240393. The next prime is 22400240441. The reversal of 22400240420 is 2404200422.

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

It is a junction number, because it is equal to n+sod(n) for n = 22400240392 and 22400240401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11914082 + ... + 11915961.

It is an arithmetic number, because the mean of its divisors is an integer number (2001723696).

Almost surely, 2^22400240420 is an apocalyptic number.

22400240420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400240420 is an abundant number, since it is smaller than the sum of its proper divisors (25641128284).

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

22400240420 is a wasteful number, since it uses less digits than its factorization.

22400240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830099 (or 23830097 counting only the distinct ones).

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

Adding to 22400240420 its reverse (2404200422), we get a palindrome (24804440842).

The spelling of 22400240420 in words is "twenty-two billion, four hundred million, two hundred forty thousand, four hundred twenty".