11931960 has 64 divisors (see below), whose sum is σ = 37908000. Its totient is φ = 2994176.

The previous prime is 11931929. The next prime is 11931967. The reversal of 11931960 is 6913911.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11931967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 4964.

Almost surely, 2^11931960 is an apocalyptic number.

11931960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11931960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18954000).

11931960 is an abundant number, since it is smaller than the sum of its proper divisors (25976040).

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

11931960 is a wasteful number, since it uses less digits than its factorization.

11931960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 11931960 is about 3454.2669265707. The cubic root of 11931960 is about 228.5093261344.

The spelling of 11931960 in words is "eleven million, nine hundred thirty-one thousand, nine hundred sixty".