22381136 has 20 divisors (see below), whose sum is σ = 43455552. Its totient is φ = 11166816.

The previous prime is 22381133. The next prime is 22381157. The reversal of 22381136 is 63118322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22381133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8201 + ... + 10583.

Almost surely, 2^22381136 is an apocalyptic number.

It is an amenable number.

22381136 is a deficient number, since it is larger than the sum of its proper divisors (21074416).

22381136 is a wasteful number, since it uses less digits than its factorization.

22381136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2972 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 22381136 is about 4730.8705329992. The cubic root of 22381136 is about 281.8127959618.

Adding to 22381136 its reverse (63118322), we get a palindrome (85499458).

The spelling of 22381136 in words is "twenty-two million, three hundred eighty-one thousand, one hundred thirty-six".