22185146 has 4 divisors (see below), whose sum is σ = 33277722. Its totient is φ = 11092572.

The previous prime is 22185139. The next prime is 22185167. The reversal of 22185146 is 64158122.

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., 20349121 + 1836025 = 4511^2 + 1355^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5546285 + ... + 5546288.

Almost surely, 2^22185146 is an apocalyptic number.

22185146 is a deficient number, since it is larger than the sum of its proper divisors (11092576).

22185146 is a wasteful number, since it uses less digits than its factorization.

22185146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11092575.

The product of its digits is 3840, while the sum is 29.

The square root of 22185146 is about 4710.1110390308. Note that the first 3 decimals coincide. The cubic root of 22185146 is about 280.9877782453.

The spelling of 22185146 in words is "twenty-two million, one hundred eighty-five thousand, one hundred forty-six".