22668442 has 4 divisors (see below), whose sum is σ = 34002666. Its totient is φ = 11334220.

The previous prime is 22668427. The next prime is 22668461. The reversal of 22668442 is 24486622.

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., 20620681 + 2047761 = 4541^2 + 1431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22668398 and 22668407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5667109 + ... + 5667112.

Almost surely, 2^22668442 is an apocalyptic number.

22668442 is a deficient number, since it is larger than the sum of its proper divisors (11334224).

22668442 is a wasteful number, since it uses less digits than its factorization.

22668442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11334223.

The product of its digits is 36864, while the sum is 34.

The square root of 22668442 is about 4761.1387293378. The cubic root of 22668442 is about 283.0135467800.

The spelling of 22668442 in words is "twenty-two million, six hundred sixty-eight thousand, four hundred forty-two".