11717138 has 8 divisors (see below), whose sum is σ = 17639100. Its totient is φ = 5837440.

The previous prime is 11717137. The next prime is 11717159. The reversal of 11717138 is 83171711.

It can be written as a sum of positive squares in 2 ways, for example, as 10387729 + 1329409 = 3223^2 + 1153^2 .

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

It is a super-2 number, since 2×11717138² = 274582645822088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11717138.

It is not an unprimeable number, because it can be changed into a prime (11717137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9863 + ... + 10986.

Almost surely, 2^11717138 is an apocalyptic number.

11717138 is a deficient number, since it is larger than the sum of its proper divisors (5921962).

11717138 is a wasteful number, since it uses less digits than its factorization.

11717138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21132.

The product of its digits is 1176, while the sum is 29.

The square root of 11717138 is about 3423.0305286398. The cubic root of 11717138 is about 227.1296586988.

Adding to 11717138 its reverse (83171711), we get a palindrome (94888849).

The spelling of 11717138 in words is "eleven million, seven hundred seventeen thousand, one hundred thirty-eight".