22043722 has 4 divisors (see below), whose sum is σ = 33065586. Its totient is φ = 11021860.

The previous prime is 22043717. The next prime is 22043731. The reversal of 22043722 is 22734022.

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., 13697401 + 8346321 = 3701^2 + 2889^2 .

It is a super-2 number, since 2×22043722² = 971851359226568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22043693 and 22043702.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510929 + ... + 5510932.

Almost surely, 2^22043722 is an apocalyptic number.

22043722 is a deficient number, since it is larger than the sum of its proper divisors (11021864).

22043722 is a wasteful number, since it uses less digits than its factorization.

22043722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021863.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 22043722 is about 4695.0742273153. The cubic root of 22043722 is about 280.3894326039.

Adding to 22043722 its reverse (22734022), we get a palindrome (44777744).

The spelling of 22043722 in words is "twenty-two million, forty-three thousand, seven hundred twenty-two".