22247720438 has 16 divisors (see below), whose sum is σ = 34086873600. Its totient is φ = 10885502376.

The previous prime is 22247720381. The next prime is 22247720441. The reversal of 22247720438 is 83402774222.

It is a happy number.

It is a super-2 number, since 2×22247720438² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22247720395 and 22247720404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777713 + ... + 805811.

It is an arithmetic number, because the mean of its divisors is an integer number (2130429600).

Almost surely, 2^22247720438 is an apocalyptic number.

22247720438 is a deficient number, since it is larger than the sum of its proper divisors (11839153162).

22247720438 is a wasteful number, since it uses less digits than its factorization.

22247720438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36571.

The product of its (nonzero) digits is 301056, while the sum is 41.

The spelling of 22247720438 in words is "twenty-two billion, two hundred forty-seven million, seven hundred twenty thousand, four hundred thirty-eight".