11982906 has 48 divisors (see below), whose sum is σ = 28665000. Its totient is φ = 3594240.

The previous prime is 11982899. The next prime is 11982911. The reversal of 11982906 is 60928911.

It can be written as a sum of positive squares in 4 ways, for example, as 4447881 + 7535025 = 2109^2 + 2745^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8970 + ... + 10218.

Almost surely, 2^11982906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11982906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14332500).

11982906 is an abundant number, since it is smaller than the sum of its proper divisors (16682094).

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

11982906 is a wasteful number, since it uses less digits than its factorization.

11982906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 11982906 is about 3461.6334294665. The cubic root of 11982906 is about 228.8340871549.

The spelling of 11982906 in words is "eleven million, nine hundred eighty-two thousand, nine hundred six".