22155838 has 8 divisors (see below), whose sum is σ = 33607440. Its totient is φ = 10953360.

The previous prime is 22155829. The next prime is 22155839. The reversal of 22155838 is 83855122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155839) 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, 62058 + ... + 62413.

It is an arithmetic number, because the mean of its divisors is an integer number (4200930).

Almost surely, 2^22155838 is an apocalyptic number.

22155838 is a deficient number, since it is larger than the sum of its proper divisors (11451602).

22155838 is a wasteful number, since it uses less digits than its factorization.

22155838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124562.

The product of its digits is 19200, while the sum is 34.

The square root of 22155838 is about 4706.9988315274. The cubic root of 22155838 is about 280.8639894292.

The spelling of 22155838 in words is "twenty-two million, one hundred fifty-five thousand, eight hundred thirty-eight".