238222811 has 4 divisors (see below), whose sum is σ = 238332672. Its totient is φ = 238112952.

The previous prime is 238222793. The next prime is 238222823. The reversal of 238222811 is 118222832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238222811 - 2²² = 234028507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238222511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51611 + ... + 56036.

It is an arithmetic number, because the mean of its divisors is an integer number (59583168).

Almost surely, 2^238222811 is an apocalyptic number.

238222811 is a deficient number, since it is larger than the sum of its proper divisors (109861).

238222811 is a wasteful number, since it uses less digits than its factorization.

238222811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109860.

The product of its digits is 3072, while the sum is 29.

The square root of 238222811 is about 15434.4682772035. The cubic root of 238222811 is about 619.9087716968.

The spelling of 238222811 in words is "two hundred thirty-eight million, two hundred twenty-two thousand, eight hundred eleven".