22047442 has 4 divisors (see below), whose sum is σ = 33071166. Its totient is φ = 11023720.

The previous prime is 22047439. The next prime is 22047451. The reversal of 22047442 is 24474022.

It is a happy number.

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., 18395521 + 3651921 = 4289^2 + 1911^2 .

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, 5511859 + ... + 5511862.

Almost surely, 2^22047442 is an apocalyptic number.

22047442 is a deficient number, since it is larger than the sum of its proper divisors (11023724).

22047442 is a wasteful number, since it uses less digits than its factorization.

22047442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023723.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 22047442 is about 4695.4703704741. The cubic root of 22047442 is about 280.4052041392.

The spelling of 22047442 in words is "twenty-two million, forty-seven thousand, four hundred forty-two".