22046138 has 4 divisors (see below), whose sum is σ = 33069210. Its totient is φ = 11023068.

The previous prime is 22046131. The next prime is 22046147. The reversal of 22046138 is 83164022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83164022 = 2 ⋅41582011.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 4765489 = 4157^2 + 2183^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22046131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511533 + ... + 5511536.

Almost surely, 2^22046138 is an apocalyptic number.

22046138 is a deficient number, since it is larger than the sum of its proper divisors (11023072).

22046138 is a wasteful number, since it uses less digits than its factorization.

22046138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023071.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22046138 is about 4695.3315111928. The cubic root of 22046138 is about 280.3996758245.

The spelling of 22046138 in words is "twenty-two million, forty-six thousand, one hundred thirty-eight".