11213982 has 48 divisors (see below), whose sum is σ = 27714960. Its totient is φ = 3246336.

The previous prime is 11213977. The next prime is 11213987. The reversal of 11213982 is 28931211.

It is an interprime number because it is at equal distance from previous prime (11213977) and next prime (11213987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213987) by changing a digit.

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, 2569 + ... + 5387.

It is an arithmetic number, because the mean of its divisors is an integer number (577395).

Almost surely, 2^11213982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11213982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13857480).

11213982 is an abundant number, since it is smaller than the sum of its proper divisors (16500978).

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

11213982 is a wasteful number, since it uses less digits than its factorization.

11213982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2854 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11213982 is about 3348.7284153840. The cubic root of 11213982 is about 223.8308539186.

The spelling of 11213982 in words is "eleven million, two hundred thirteen thousand, nine hundred eighty-two".