22235572836 has 36 divisors (see below), whose sum is σ = 57725687292. Its totient is φ = 7211536704.

The previous prime is 22235572831. The next prime is 22235572859. The reversal of 22235572836 is 63827553222.

22235572836 is a `hidden beast` number, since 22 + 23 + 5 + 572 + 8 + 36 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15164444736 + 7071128100 = 123144^2 + 84090^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×22235572836² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22235572791 and 22235572800.

It is not an unprimeable number, because it can be changed into a prime (22235572831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8345355 + ... + 8348018.

Almost surely, 2^22235572836 is an apocalyptic number.

It is an amenable number.

22235572836 is an abundant number, since it is smaller than the sum of its proper divisors (35490114456).

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

22235572836 is a wasteful number, since it uses less digits than its factorization.

22235572836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16693420 (or 16693415 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 22235572836 in words is "twenty-two billion, two hundred thirty-five million, five hundred seventy-two thousand, eight hundred thirty-six".