22043738 has 4 divisors (see below), whose sum is σ = 33065610. Its totient is φ = 11021868.

The previous prime is 22043731. The next prime is 22043761. The reversal of 22043738 is 83734022.

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., 16949689 + 5094049 = 4117^2 + 2257^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22043738.

It is not an unprimeable number, because it can be changed into a prime (22043731) 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 as a sum of consecutive naturals, namely, 5510933 + ... + 5510936.

Almost surely, 2^22043738 is an apocalyptic number.

22043738 is a deficient number, since it is larger than the sum of its proper divisors (11021872).

22043738 is a wasteful number, since it uses less digits than its factorization.

22043738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021871.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 22043738 is about 4695.0759312284. The cubic root of 22043738 is about 280.3895004422.

The spelling of 22043738 in words is "twenty-two million, forty-three thousand, seven hundred thirty-eight".