22109564 has 6 divisors (see below), whose sum is σ = 38691744. Its totient is φ = 11054780.

The previous prime is 22109561. The next prime is 22109567. The reversal of 22109564 is 46590122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22109561) and next prime (22109567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22109561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2763692 + ... + 2763699.

It is an arithmetic number, because the mean of its divisors is an integer number (6448624).

Almost surely, 2^22109564 is an apocalyptic number.

It is an amenable number.

22109564 is a deficient number, since it is larger than the sum of its proper divisors (16582180).

22109564 is a wasteful number, since it uses less digits than its factorization.

22109564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527395 (or 5527393 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22109564 is about 4702.0808159792. The cubic root of 22109564 is about 280.6683185195.

Adding to 22109564 its reverse (46590122), we get a palindrome (68699686).

The spelling of 22109564 in words is "twenty-two million, one hundred nine thousand, five hundred sixty-four".