22185946 has 4 divisors (see below), whose sum is σ = 33278922. Its totient is φ = 11092972.

The previous prime is 22185931. The next prime is 22185971. The reversal of 22185946 is 64958122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 2070721 = 4485^2 + 1439^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5546485 + ... + 5546488.

Almost surely, 2^22185946 is an apocalyptic number.

22185946 is a deficient number, since it is larger than the sum of its proper divisors (11092976).

22185946 is a wasteful number, since it uses less digits than its factorization.

22185946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11092975.

The product of its digits is 34560, while the sum is 37.

The square root of 22185946 is about 4710.1959619532. The cubic root of 22185946 is about 280.9911556931.

The spelling of 22185946 in words is "twenty-two million, one hundred eighty-five thousand, nine hundred forty-six".