22136442 has 16 divisors (see below), whose sum is σ = 46198080. Its totient is φ = 7057952.

The previous prime is 22136437. The next prime is 22136453. The reversal of 22136442 is 24463122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80067 + ... + 80342.

It is an arithmetic number, because the mean of its divisors is an integer number (2887380).

Almost surely, 2^22136442 is an apocalyptic number.

22136442 is an abundant number, since it is smaller than the sum of its proper divisors (24061638).

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

22136442 is a wasteful number, since it uses less digits than its factorization.

22136442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160437.

The product of its digits is 2304, while the sum is 24.

The square root of 22136442 is about 4704.9380442254. The cubic root of 22136442 is about 280.7820060953.

Adding to 22136442 its reverse (24463122), we get a palindrome (46599564).

It can be divided in two parts, 22136 and 442, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 22136442 in words is "twenty-two million, one hundred thirty-six thousand, four hundred forty-two".