22403444406 has 16 divisors (see below), whose sum is σ = 51207873024. Its totient is φ = 6400984104.

The previous prime is 22403444347. The next prime is 22403444431. The reversal of 22403444406 is 60444430422.

It is a happy number.

It is a congruent number.

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, 266707630 + ... + 266707713.

It is an arithmetic number, because the mean of its divisors is an integer number (3200492064).

Almost surely, 2^22403444406 is an apocalyptic number.

22403444406 is an abundant number, since it is smaller than the sum of its proper divisors (28804428618).

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

22403444406 is a wasteful number, since it uses less digits than its factorization.

22403444406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533415355.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 22403444406 its reverse (60444430422), we get a palindrome (82847874828).

The spelling of 22403444406 in words is "twenty-two billion, four hundred three million, four hundred forty-four thousand, four hundred six".