11921748 has 12 divisors (see below), whose sum is σ = 27817440. Its totient is φ = 3973912.

The previous prime is 11921729. The next prime is 11921753. The reversal of 11921748 is 84712911.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 496728 + ... + 496751.

It is an arithmetic number, because the mean of its divisors is an integer number (2318120).

Almost surely, 2^11921748 is an apocalyptic number.

It is an amenable number.

11921748 is an abundant number, since it is smaller than the sum of its proper divisors (15895692).

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

11921748 is a wasteful number, since it uses less digits than its factorization.

11921748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993486 (or 993484 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 11921748 is about 3452.7884383495. The cubic root of 11921748 is about 228.4441174211. Note that the first 3 decimals are identical.

The spelling of 11921748 in words is "eleven million, nine hundred twenty-one thousand, seven hundred forty-eight".