22356861 has 8 divisors (see below), whose sum is σ = 30502560. Its totient is φ = 14557872.

The previous prime is 22356827. The next prime is 22356869. The reversal of 22356861 is 16865322.

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

It is not a de Polignac number, because 22356861 - 2¹⁴ = 22340477 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22356869) 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, 86526 + ... + 86783.

It is an arithmetic number, because the mean of its divisors is an integer number (3812820).

Almost surely, 2^22356861 is an apocalyptic number.

It is an amenable number.

22356861 is a deficient number, since it is larger than the sum of its proper divisors (8145699).

22356861 is a wasteful number, since it uses less digits than its factorization.

22356861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173355.

The product of its digits is 17280, while the sum is 33.

The square root of 22356861 is about 4728.3042414802. The cubic root of 22356861 is about 281.7108726217.

The spelling of 22356861 in words is "twenty-two million, three hundred fifty-six thousand, eight hundred sixty-one".