11036781 has 24 divisors (see below), whose sum is σ = 18320640. Its totient is φ = 6271776.

The previous prime is 11036771. The next prime is 11036813. The reversal of 11036781 is 18763011.

It is not a de Polignac number, because 11036781 - 2¹⁰ = 11035757 is a prime.

It is a super-2 number, since 2×11036781² = 243621069683922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11036731) 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 23 ways as a sum of consecutive naturals, for example, 14691 + ... + 15423.

It is an arithmetic number, because the mean of its divisors is an integer number (763360).

Almost surely, 2^11036781 is an apocalyptic number.

It is an amenable number.

11036781 is a deficient number, since it is larger than the sum of its proper divisors (7283859).

11036781 is a wasteful number, since it uses less digits than its factorization.

11036781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 11036781 is about 3322.1651072757. The cubic root of 11036781 is about 222.6456127180.

Adding to 11036781 its reverse (18763011), we get a palindrome (29799792).

The spelling of 11036781 in words is "eleven million, thirty-six thousand, seven hundred eighty-one".