11881814 has 24 divisors (see below), whose sum is σ = 20856528. Its totient is φ = 5061840.

The previous prime is 11881811. The next prime is 11881829. The reversal of 11881814 is 41818811.

11881814 = 1722² + 1723² + ... + 1725².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881811) 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 11 ways as a sum of consecutive naturals, for example, 25544 + ... + 26004.

It is an arithmetic number, because the mean of its divisors is an integer number (869022).

Almost surely, 2^11881814 is an apocalyptic number.

11881814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11881814 is a deficient number, since it is larger than the sum of its proper divisors (8974714).

11881814 is a wasteful number, since it uses less digits than its factorization.

11881814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 733 counting only the distinct ones).

The product of its digits is 2048, while the sum is 32.

The square root of 11881814 is about 3447.0007252683. Note that the first 3 decimals coincide. The cubic root of 11881814 is about 228.1887607849.

The spelling of 11881814 in words is "eleven million, eight hundred eighty-one thousand, eight hundred fourteen".