22428161 has 8 divisors (see below), whose sum is σ = 25886784. Its totient is φ = 19033200.

The previous prime is 22428157. The next prime is 22428173. The reversal of 22428161 is 16182422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22428161 - 2² = 22428157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22428161.

It is not an unprimeable number, because it can be changed into a prime (22428191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15155 + ... + 16568.

It is an arithmetic number, because the mean of its divisors is an integer number (3235848).

Almost surely, 2^22428161 is an apocalyptic number.

It is an amenable number.

22428161 is a deficient number, since it is larger than the sum of its proper divisors (3458623).

22428161 is a wasteful number, since it uses less digits than its factorization.

22428161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31831.

The product of its digits is 1536, while the sum is 26.

The square root of 22428161 is about 4735.8379406394. The cubic root of 22428161 is about 282.0100301581.

The spelling of 22428161 in words is "twenty-two million, four hundred twenty-eight thousand, one hundred sixty-one".