11976138 has 24 divisors (see below), whose sum is σ = 26316576. Its totient is φ = 3935400.

The previous prime is 11976131. The next prime is 11976179. The reversal of 11976138 is 83167911.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11976131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3408 + ... + 5963.

It is an arithmetic number, because the mean of its divisors is an integer number (1096524).

Almost surely, 2^11976138 is an apocalyptic number.

11976138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11976138 is an abundant number, since it is smaller than the sum of its proper divisors (14340438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11976138 is a wasteful number, since it uses less digits than its factorization.

11976138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450 (or 9447 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11976138 is about 3460.6557182130. The cubic root of 11976138 is about 228.7909968624.

The spelling of 11976138 in words is "eleven million, nine hundred seventy-six thousand, one hundred thirty-eight".