22261689 has 16 divisors (see below), whose sum is σ = 34045440. Its totient is φ = 14361840.

The previous prime is 22261667. The next prime is 22261697. The reversal of 22261689 is 98616222.

It is a happy number.

It is not a de Polignac number, because 22261689 - 2¹¹ = 22259641 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (22261639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12462 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (2127840).

Almost surely, 2^22261689 is an apocalyptic number.

It is an amenable number.

22261689 is a deficient number, since it is larger than the sum of its proper divisors (11783751).

22261689 is a wasteful number, since it uses less digits than its factorization.

22261689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26637 (or 26631 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 22261689 is about 4718.2294348622. The cubic root of 22261689 is about 281.3105611807.

The spelling of 22261689 in words is "twenty-two million, two hundred sixty-one thousand, six hundred eighty-nine".