11919144 has 16 divisors (see below), whose sum is σ = 29797920. Its totient is φ = 3973040.

The previous prime is 11919139. The next prime is 11919157. The reversal of 11919144 is 44191911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248292 + ... + 248339.

It is an arithmetic number, because the mean of its divisors is an integer number (1862370).

Almost surely, 2^11919144 is an apocalyptic number.

It is an amenable number.

11919144 is an abundant number, since it is smaller than the sum of its proper divisors (17878776).

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

11919144 is a wasteful number, since it uses less digits than its factorization.

11919144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496640 (or 496636 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 11919144 is about 3452.4113312292. The cubic root of 11919144 is about 228.4274836243.

The spelling of 11919144 in words is "eleven million, nine hundred nineteen thousand, one hundred forty-four".