22004000400 has 60 divisors (see below), whose sum is σ = 70486151792. Its totient is φ = 5867733120.

The previous prime is 22004000363. The next prime is 22004000411. The reversal of 22004000400 is 400040022.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 9167134 + ... + 9169533.

Almost surely, 2^22004000400 is an apocalyptic number.

22004000400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22004000400 is an abundant number, since it is smaller than the sum of its proper divisors (48482151392).

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

22004000400 is a wasteful number, since it uses less digits than its factorization.

22004000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18336688 (or 18336677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 22004000400 its reverse (400040022), we get a palindrome (22404040422).

The spelling of 22004000400 in words is "twenty-two billion, four million, four hundred", and thus it is an aban number.