11985426 has 12 divisors (see below), whose sum is σ = 25968462. Its totient is φ = 3995136.

The previous prime is 11985403. The next prime is 11985427. The reversal of 11985426 is 62458911.

It can be written as a sum of positive squares in only one way, i.e., 6007401 + 5978025 = 2451^2 + 2445^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11985427) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 332911 + ... + 332946.

Almost surely, 2^11985426 is an apocalyptic number.

11985426 is an abundant number, since it is smaller than the sum of its proper divisors (13983036).

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

11985426 is a wasteful number, since it uses less digits than its factorization.

11985426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665865 (or 665862 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 11985426 is about 3461.9974003456. The cubic root of 11985426 is about 228.8501272674.

It can be divided in two parts, 11985 and 426, that multiplied together give a triangular number (5105610 = T₃₁₉₅).

The spelling of 11985426 in words is "eleven million, nine hundred eighty-five thousand, four hundred twenty-six".