12088138 has 4 divisors (see below), whose sum is σ = 18132210. Its totient is φ = 6044068.

The previous prime is 12088127. The next prime is 12088147. The reversal of 12088138 is 83188021.

12088138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 11648569 + 439569 = 3413^2 + 663^2 .

It is a super-2 number, since 2×12088138² = 292246160614088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3022033 + ... + 3022036.

Almost surely, 2^12088138 is an apocalyptic number.

12088138 is a deficient number, since it is larger than the sum of its proper divisors (6044072).

12088138 is an equidigital number, since it uses as much as digits as its factorization.

12088138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044071.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 12088138 is about 3476.7999654855. The cubic root of 12088138 is about 229.5019974733.

The spelling of 12088138 in words is "twelve million, eighty-eight thousand, one hundred thirty-eight".