22136454 has 24 divisors (see below), whose sum is σ = 49617360. Its totient is φ = 7124208.

The previous prime is 22136453. The next prime is 22136459. The reversal of 22136454 is 45463122.

22136454 is a `hidden beast` number, since 2 + 2 + 13 + 645 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22136453) 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 11 ways as a sum of consecutive naturals, for example, 20682 + ... + 21725.

It is an arithmetic number, because the mean of its divisors is an integer number (2067390).

Almost surely, 2^22136454 is an apocalyptic number.

22136454 is an abundant number, since it is smaller than the sum of its proper divisors (27480906).

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

22136454 is a wasteful number, since it uses less digits than its factorization.

22136454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42444 (or 42441 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 22136454 is about 4704.9393194812. The cubic root of 22136454 is about 280.7820568319.

Adding to 22136454 its reverse (45463122), we get a palindrome (67599576).

The spelling of 22136454 in words is "twenty-two million, one hundred thirty-six thousand, four hundred fifty-four".