11857838 has 4 divisors (see below), whose sum is σ = 17786760. Its totient is φ = 5928918.

The previous prime is 11857837. The next prime is 11857873. The reversal of 11857838 is 83875811.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11857795 and 11857804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2964458 + ... + 2964461.

It is an arithmetic number, because the mean of its divisors is an integer number (4446690).

Almost surely, 2^11857838 is an apocalyptic number.

11857838 is a deficient number, since it is larger than the sum of its proper divisors (5928922).

11857838 is an equidigital number, since it uses as much as digits as its factorization.

11857838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928921.

The product of its digits is 53760, while the sum is 41.

The square root of 11857838 is about 3443.5211629958. The cubic root of 11857838 is about 228.0351720645.

The spelling of 11857838 in words is "eleven million, eight hundred fifty-seven thousand, eight hundred thirty-eight".