12011738 has 4 divisors (see below), whose sum is σ = 18017610. Its totient is φ = 6005868.

The previous prime is 12011731. The next prime is 12011767. The reversal of 12011738 is 83711021.

It is a happy number.

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., 11242609 + 769129 = 3353^2 + 877^2 .

It is a super-3 number, since 3×12011738³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12011731) 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 as a sum of consecutive naturals, namely, 3002933 + ... + 3002936.

Almost surely, 2^12011738 is an apocalyptic number.

12011738 is a deficient number, since it is larger than the sum of its proper divisors (6005872).

12011738 is an equidigital number, since it uses as much as digits as its factorization.

12011738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005871.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12011738 is about 3465.7954353943. The cubic root of 12011738 is about 229.0174722721.

Adding to 12011738 its reverse (83711021), we get a palindrome (95722759).

The spelling of 12011738 in words is "twelve million, eleven thousand, seven hundred thirty-eight".