11681004 has 48 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 3758016.

The previous prime is 11680969. The next prime is 11681039. The reversal of 11681004 is 40018611.

It is an interprime number because it is at equal distance from previous prime (11680969) and next prime (11681039).

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 15 ways as a sum of consecutive naturals, for example, 78322 + ... + 78470.

It is an arithmetic number, because the mean of its divisors is an integer number (588000).

Almost surely, 2^11681004 is an apocalyptic number.

It is an amenable number.

11681004 is an abundant number, since it is smaller than the sum of its proper divisors (16542996).

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

11681004 is a wasteful number, since it uses less digits than its factorization.

11681004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 11681004 is about 3417.7483816103. The cubic root of 11681004 is about 226.8959396772.

Adding to 11681004 its reverse (40018611), we get a palindrome (51699615).

The spelling of 11681004 in words is "eleven million, six hundred eighty-one thousand, four".