22238738 has 8 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 11093140.

The previous prime is 22238731. The next prime is 22238743. The reversal of 22238738 is 83783222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22238738² = 989122935665288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22238698 and 22238707.

It is not an unprimeable number, because it can be changed into a prime (22238731) 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 in 3 ways as a sum of consecutive naturals, for example, 12038 + ... + 13761.

It is an arithmetic number, because the mean of its divisors is an integer number (4179600).

Almost surely, 2^22238738 is an apocalyptic number.

22238738 is a deficient number, since it is larger than the sum of its proper divisors (11198062).

22238738 is a wasteful number, since it uses less digits than its factorization.

22238738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26232.

The product of its digits is 32256, while the sum is 35.

The square root of 22238738 is about 4715.7966453188. The cubic root of 22238738 is about 281.2138542519.

The spelling of 22238738 in words is "twenty-two million, two hundred thirty-eight thousand, seven hundred thirty-eight".