11919140 has 12 divisors (see below), whose sum is σ = 25030236. Its totient is φ = 4767648.

The previous prime is 11919139. The next prime is 11919157. The reversal of 11919140 is 4191911.

It can be written as a sum of positive squares in 2 ways, for example, as 5798464 + 6120676 = 2408^2 + 2474^2 .

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, 297959 + ... + 297998.

It is an arithmetic number, because the mean of its divisors is an integer number (2085853).

Almost surely, 2^11919140 is an apocalyptic number.

11919140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11919140 is an abundant number, since it is smaller than the sum of its proper divisors (13111096).

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

11919140 is a wasteful number, since it uses less digits than its factorization.

11919140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595966 (or 595964 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 11919140 is about 3452.4107519239. The cubic root of 11919140 is about 228.4274580713.

The spelling of 11919140 in words is "eleven million, nine hundred nineteen thousand, one hundred forty".