11857538 has 32 divisors (see below), whose sum is σ = 22785408. Its totient is φ = 4492800.

The previous prime is 11857529. The next prime is 11857543. The reversal of 11857538 is 83575811.

11857538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4658 + ... + 6738.

It is an arithmetic number, because the mean of its divisors is an integer number (712044).

Almost surely, 2^11857538 is an apocalyptic number.

11857538 is a deficient number, since it is larger than the sum of its proper divisors (10927870).

11857538 is a wasteful number, since it uses less digits than its factorization.

11857538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its digits is 33600, while the sum is 38.

The square root of 11857538 is about 3443.4776026569. The cubic root of 11857538 is about 228.0332489728.

The spelling of 11857538 in words is "eleven million, eight hundred fifty-seven thousand, five hundred thirty-eight".