22047434 has 4 divisors (see below), whose sum is σ = 33071154. Its totient is φ = 11023716.

The previous prime is 22047427. The next prime is 22047437. The reversal of 22047434 is 43474022.

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., 19936225 + 2111209 = 4465^2 + 1453^2 .

It is not an unprimeable number, because it can be changed into a prime (22047437) 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, 5511857 + ... + 5511860.

Almost surely, 2^22047434 is an apocalyptic number.

22047434 is a deficient number, since it is larger than the sum of its proper divisors (11023720).

22047434 is a wasteful number, since it uses less digits than its factorization.

22047434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023719.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 22047434 is about 4695.4695185892. The cubic root of 22047434 is about 280.4051702238.

The spelling of 22047434 in words is "twenty-two million, forty-seven thousand, four hundred thirty-four".