22545436 has 6 divisors (see below), whose sum is σ = 39454520. Its totient is φ = 11272716.

The previous prime is 22545431. The next prime is 22545437. The reversal of 22545436 is 63454522.

It is a junction number, because it is equal to n+sod(n) for n = 22545398 and 22545407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2818176 + ... + 2818183.

Almost surely, 2^22545436 is an apocalyptic number.

It is an amenable number.

22545436 is a deficient number, since it is larger than the sum of its proper divisors (16909084).

22545436 is a wasteful number, since it uses less digits than its factorization.

22545436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636363 (or 5636361 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 22545436 is about 4748.2034497271. The cubic root of 22545436 is about 282.5007116175.

Adding to 22545436 its reverse (63454522), we get a palindrome (85999958).

The spelling of 22545436 in words is "twenty-two million, five hundred forty-five thousand, four hundred thirty-six".