11172238 has 16 divisors (see below), whose sum is σ = 20893824. Its totient is φ = 4352760.

The previous prime is 11172233. The next prime is 11172251. The reversal of 11172238 is 83227111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172233) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 36120 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (1305864).

Almost surely, 2^11172238 is an apocalyptic number.

11172238 is a deficient number, since it is larger than the sum of its proper divisors (9721586).

11172238 is a wasteful number, since it uses less digits than its factorization.

11172238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72567.

The product of its digits is 672, while the sum is 25.

The square root of 11172238 is about 3342.4897905603. The cubic root of 11172238 is about 223.5527721146.

Adding to 11172238 its reverse (83227111), we get a palindrome (94399349).

The spelling of 11172238 in words is "eleven million, one hundred seventy-two thousand, two hundred thirty-eight".