22194401 has 8 divisors (see below), whose sum is σ = 23633064. Its totient is φ = 20770560.

The previous prime is 22194373. The next prime is 22194427. The reversal of 22194401 is 10449122.

It can be written as a sum of positive squares in 4 ways, for example, as 3045025 + 19149376 = 1745^2 + 4376^2 .

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 22194401 - 2¹⁸ = 21932257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22194001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (2954133).

Almost surely, 2^22194401 is an apocalyptic number.

It is an amenable number.

22194401 is a deficient number, since it is larger than the sum of its proper divisors (1438663).

22194401 is a wasteful number, since it uses less digits than its factorization.

22194401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7411.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22194401 is about 4711.0933975034. The cubic root of 22194401 is about 281.0268461326.

The spelling of 22194401 in words is "twenty-two million, one hundred ninety-four thousand, four hundred one".