11781282 has 16 divisors (see below), whose sum is σ = 23749632. Its totient is φ = 3895920.

The previous prime is 11781257. The next prime is 11781307. The reversal of 11781282 is 28218711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11781257) and next prime (11781307).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6969 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (1484352).

Almost surely, 2^11781282 is an apocalyptic number.

11781282 is an abundant number, since it is smaller than the sum of its proper divisors (11968350).

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

11781282 is a wasteful number, since it uses less digits than its factorization.

11781282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593.

The product of its digits is 1792, while the sum is 30.

The square root of 11781282 is about 3432.3872159184. The cubic root of 11781282 is about 227.5433689408.

Adding to 11781282 its reverse (28218711), we get a palindrome (39999993).

The spelling of 11781282 in words is "eleven million, seven hundred eighty-one thousand, two hundred eighty-two".