22135506 has 16 divisors (see below), whose sum is σ = 44319744. Its totient is φ = 7370384.

The previous prime is 22135493. The next prime is 22135507. The reversal of 22135506 is 60553122.

It is not an unprimeable number, because it can be changed into a prime (22135507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6895 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (2769984).

Almost surely, 2^22135506 is an apocalyptic number.

22135506 is an abundant number, since it is smaller than the sum of its proper divisors (22184238).

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

22135506 is a wasteful number, since it uses less digits than its factorization.

22135506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22135506 is about 4704.8385732138. The cubic root of 22135506 is about 280.7780485839.

Adding to 22135506 its reverse (60553122), we get a palindrome (82688628).

The spelling of 22135506 in words is "twenty-two million, one hundred thirty-five thousand, five hundred six".