11667838 has 16 divisors (see below), whose sum is σ = 21540960. Its totient is φ = 4615776.

The previous prime is 11667833. The next prime is 11667863. The reversal of 11667838 is 83876611.

11667838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11667838² = 272276887188488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11667838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31873 + ... + 32236.

It is an arithmetic number, because the mean of its divisors is an integer number (1346310).

Almost surely, 2^11667838 is an apocalyptic number.

11667838 is a deficient number, since it is larger than the sum of its proper divisors (9873122).

11667838 is a wasteful number, since it uses less digits than its factorization.

11667838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64131.

The product of its digits is 48384, while the sum is 40.

The square root of 11667838 is about 3415.8217166591. The cubic root of 11667838 is about 226.8106606205.

The spelling of 11667838 in words is "eleven million, six hundred sixty-seven thousand, eight hundred thirty-eight".