11921776 has 40 divisors (see below), whose sum is σ = 23949360. Its totient is φ = 5746176.

The previous prime is 11921773. The next prime is 11921827. The reversal of 11921776 is 67712911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921773) 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 7 ways as a sum of consecutive naturals, for example, 68826 + ... + 68998.

It is an arithmetic number, because the mean of its divisors is an integer number (598734).

Almost surely, 2^11921776 is an apocalyptic number.

11921776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11921776 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

11921776 is a wasteful number, since it uses less digits than its factorization.

11921776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 307 counting only the distinct ones).

The product of its digits is 5292, while the sum is 34.

The square root of 11921776 is about 3452.7924930410. The cubic root of 11921776 is about 228.4442962659. Note that the first 3 decimals are identical.

The spelling of 11921776 in words is "eleven million, nine hundred twenty-one thousand, seven hundred seventy-six".