11897688 has 96 divisors (see below), whose sum is σ = 34760880. Its totient is φ = 3379200.

The previous prime is 11897687. The next prime is 11897701. The reversal of 11897688 is 88679811.

11897688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11897681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49248 + ... + 49488.

Almost surely, 2^11897688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11897688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17380440).

11897688 is an abundant number, since it is smaller than the sum of its proper divisors (22863192).

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

11897688 is a wasteful number, since it uses less digits than its factorization.

11897688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 274 counting only the distinct ones).

The product of its digits is 193536, while the sum is 48.

The square root of 11897688 is about 3449.3025381952. The cubic root of 11897688 is about 228.2903349631.

The spelling of 11897688 in words is "eleven million, eight hundred ninety-seven thousand, six hundred eighty-eight".