11712838 has 4 divisors (see below), whose sum is σ = 17569260. Its totient is φ = 5856418.

The previous prime is 11712817. The next prime is 11712853. The reversal of 11712838 is 83821711.

It is a happy number.

11712838 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, and also an emirpimes, since its reverse is a distinct semiprime: 83821711 = 19 ⋅4411669.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2928208 + ... + 2928211.

It is an arithmetic number, because the mean of its divisors is an integer number (4392315).

Almost surely, 2^11712838 is an apocalyptic number.

11712838 is a deficient number, since it is larger than the sum of its proper divisors (5856422).

11712838 is an equidigital number, since it uses as much as digits as its factorization.

11712838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856421.

The product of its digits is 2688, while the sum is 31.

The square root of 11712838 is about 3422.4023726032. The cubic root of 11712838 is about 227.1018709965.

The spelling of 11712838 in words is "eleven million, seven hundred twelve thousand, eight hundred thirty-eight".