22561869 has 8 divisors (see below), whose sum is σ = 32817312. Its totient is φ = 13673840.

The previous prime is 22561859. The next prime is 22561933. The reversal of 22561869 is 96816522.

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 22561869 - 2⁴ = 22561853 is a prime.

It is a super-2 number, since 2×22561869² = 1018075865546322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561829) 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, 341814 + ... + 341879.

It is an arithmetic number, because the mean of its divisors is an integer number (4102164).

Almost surely, 2^22561869 is an apocalyptic number.

It is an amenable number.

22561869 is a deficient number, since it is larger than the sum of its proper divisors (10255443).

22561869 is a wasteful number, since it uses less digits than its factorization.

22561869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683707.

The product of its digits is 51840, while the sum is 39.

The square root of 22561869 is about 4749.9335784830. The cubic root of 22561869 is about 282.5693316661.

The spelling of 22561869 in words is "twenty-two million, five hundred sixty-one thousand, eight hundred sixty-nine".