22351689 has 6 divisors (see below), whose sum is σ = 32285786. Its totient is φ = 14901120.

The previous prime is 22351673. The next prime is 22351691. The reversal of 22351689 is 98615322.

It can be written as a sum of positive squares in only one way, i.e., 17139600 + 5212089 = 4140^2 + 2283^2 .

It is not a de Polignac number, because 22351689 - 2⁴ = 22351673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22351289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1241752 + ... + 1241769.

Almost surely, 2^22351689 is an apocalyptic number.

It is an amenable number.

22351689 is a deficient number, since it is larger than the sum of its proper divisors (9934097).

22351689 is a wasteful number, since it uses less digits than its factorization.

22351689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483527 (or 2483524 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22351689 is about 4727.7572907246. The cubic root of 22351689 is about 281.6891474340.

The spelling of 22351689 in words is "twenty-two million, three hundred fifty-one thousand, six hundred eighty-nine".