11305138 has 8 divisors (see below), whose sum is σ = 18262188. Its totient is φ = 5217744.

The previous prime is 11305127. The next prime is 11305139. The reversal of 11305138 is 83150311.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 196249 = 3333^2 + 443^2 .

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

It is a super-2 number, since 2×11305138² = 255612290398088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11305139) 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, 217381 + ... + 217432.

Almost surely, 2^11305138 is an apocalyptic number.

11305138 is a deficient number, since it is larger than the sum of its proper divisors (6957050).

11305138 is a wasteful number, since it uses less digits than its factorization.

11305138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434828.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 11305138 is about 3362.3114073506. The cubic root of 11305138 is about 224.4357085956.

Adding to 11305138 its reverse (83150311), we get a palindrome (94455449).

The spelling of 11305138 in words is "eleven million, three hundred five thousand, one hundred thirty-eight".