22136445 has 24 divisors (see below), whose sum is σ = 38656800. Its totient is φ = 11717856.

The previous prime is 22136437. The next prime is 22136453. The reversal of 22136445 is 54463122.

22136445 is a `hidden beast` number, since 2 + 2 + 13 + 644 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (22136437) and next prime (22136453).

It is not a de Polignac number, because 22136445 - 2³ = 22136437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4486 + ... + 8024.

It is an arithmetic number, because the mean of its divisors is an integer number (1610700).

Almost surely, 2^22136445 is an apocalyptic number.

It is an amenable number.

22136445 is a deficient number, since it is larger than the sum of its proper divisors (16520355).

22136445 is a wasteful number, since it uses less digits than its factorization.

22136445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3686 counting only the distinct ones).

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

The square root of 22136445 is about 4704.9383630394. The cubic root of 22136445 is about 280.7820187794.

Adding to 22136445 its reverse (54463122), we get a palindrome (76599567).

The spelling of 22136445 in words is "twenty-two million, one hundred thirty-six thousand, four hundred forty-five".