11971340 has 24 divisors (see below), whose sum is σ = 25286352. Its totient is φ = 4760640.

The previous prime is 11971331. The next prime is 11971357. The reversal of 11971340 is 4317911.

11971340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (1053598).

Almost surely, 2^11971340 is an apocalyptic number.

11971340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11971340 is an abundant number, since it is smaller than the sum of its proper divisors (13315012).

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

11971340 is a wasteful number, since it uses less digits than its factorization.

11971340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11971340 is about 3459.9624275417. The cubic root of 11971340 is about 228.7604392700.

The spelling of 11971340 in words is "eleven million, nine hundred seventy-one thousand, three hundred forty".