22031966 has 16 divisors (see below), whose sum is σ = 38173680. Its totient is φ = 9425280.

The previous prime is 22031959. The next prime is 22031993. The reversal of 22031966 is 66913022.

22031966 = T₁₁₃₉ + T₁₁₄₀ + ... + T₁₁₇₁.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29081 + ... + 29828.

It is an arithmetic number, because the mean of its divisors is an integer number (2385855).

Almost surely, 2^22031966 is an apocalyptic number.

22031966 is a deficient number, since it is larger than the sum of its proper divisors (16141714).

22031966 is a wasteful number, since it uses less digits than its factorization.

22031966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58939.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22031966 is about 4693.8221099654. The cubic root of 22031966 is about 280.3395794936.

Adding to 22031966 its reverse (66913022), we get a palindrome (88944988).

The spelling of 22031966 in words is "twenty-two million, thirty-one thousand, nine hundred sixty-six".