11987960 has 16 divisors (see below), whose sum is σ = 26973000. Its totient is φ = 4795168.

The previous prime is 11987957. The next prime is 11987971. The reversal of 11987960 is 6978911.

It is a happy number.

It is a super-2 number, since 2×11987960² = 287422369923200, which contains 22 as substring.

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, 149810 + ... + 149889.

Almost surely, 2^11987960 is an apocalyptic number.

11987960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11987960 is an abundant number, since it is smaller than the sum of its proper divisors (14985040).

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

11987960 is a wasteful number, since it uses less digits than its factorization.

11987960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299710 (or 299706 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 11987960 is about 3462.3633547044. The cubic root of 11987960 is about 228.8662542246.

The spelling of 11987960 in words is "eleven million, nine hundred eighty-seven thousand, nine hundred sixty".