11821616 has 10 divisors (see below), whose sum is σ = 22904412. Its totient is φ = 5910800.

The previous prime is 11821583. The next prime is 11821627. The reversal of 11821616 is 61612811.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369410 + ... + 369441.

Almost surely, 2^11821616 is an apocalyptic number.

11821616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11821616 is a deficient number, since it is larger than the sum of its proper divisors (11082796).

11821616 is an equidigital number, since it uses as much as digits as its factorization.

11821616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738859 (or 738853 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 11821616 is about 3438.2576983117. The cubic root of 11821616 is about 227.8027431071.

The spelling of 11821616 in words is "eleven million, eight hundred twenty-one thousand, six hundred sixteen".