22167861 has 8 divisors (see below), whose sum is σ = 30576480. Its totient is φ = 14268912.

The previous prime is 22167841. The next prime is 22167863. The reversal of 22167861 is 16876122.

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

It is not a de Polignac number, because 22167861 - 2⁵ = 22167829 is a prime.

It is a super-2 number, since 2×22167861² = 982828122630642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22167863) 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, 127315 + ... + 127488.

It is an arithmetic number, because the mean of its divisors is an integer number (3822060).

Almost surely, 2^22167861 is an apocalyptic number.

It is an amenable number.

22167861 is a deficient number, since it is larger than the sum of its proper divisors (8408619).

22167861 is a wasteful number, since it uses less digits than its factorization.

22167861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254835.

The product of its digits is 8064, while the sum is 33.

The square root of 22167861 is about 4708.2757990585. The cubic root of 22167861 is about 280.9147844253.

The spelling of 22167861 in words is "twenty-two million, one hundred sixty-seven thousand, eight hundred sixty-one".