11838215 has 16 divisors (see below), whose sum is σ = 14916096. Its totient is φ = 9002400.

The previous prime is 11838193. The next prime is 11838221. The reversal of 11838215 is 51283811.

It is a de Polignac number, because none of the positive numbers 2^k-11838215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35600 + ... + 35930.

It is an arithmetic number, because the mean of its divisors is an integer number (932256).

Almost surely, 2^11838215 is an apocalyptic number.

11838215 is a deficient number, since it is larger than the sum of its proper divisors (3077881).

11838215 is a wasteful number, since it uses less digits than its factorization.

11838215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its digits is 1920, while the sum is 29.

The square root of 11838215 is about 3440.6707194964. The cubic root of 11838215 is about 227.9093142479.

The spelling of 11838215 in words is "eleven million, eight hundred thirty-eight thousand, two hundred fifteen".