11781896 has 16 divisors (see below), whose sum is σ = 25247040. Its totient is φ = 5049360.

The previous prime is 11781893. The next prime is 11781899. The reversal of 11781896 is 69818711.

It is an interprime number because it is at equal distance from previous prime (11781893) and next prime (11781899).

It is not an unprimeable number, because it can be changed into a prime (11781893) 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 3 ways as a sum of consecutive naturals, for example, 105140 + ... + 105251.

It is an arithmetic number, because the mean of its divisors is an integer number (1577940).

Almost surely, 2^11781896 is an apocalyptic number.

It is an amenable number.

11781896 is an abundant number, since it is smaller than the sum of its proper divisors (13465144).

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

11781896 is a wasteful number, since it uses less digits than its factorization.

11781896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210404 (or 210400 counting only the distinct ones).

The product of its digits is 24192, while the sum is 41.

The square root of 11781896 is about 3432.4766568762. The cubic root of 11781896 is about 227.5473217987.

The spelling of 11781896 in words is "eleven million, seven hundred eighty-one thousand, eight hundred ninety-six".