11987320 has 16 divisors (see below), whose sum is σ = 26971560. Its totient is φ = 4794912.

The previous prime is 11987299. The next prime is 11987323. The reversal of 11987320 is 2378911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149802 + ... + 149881.

Almost surely, 2^11987320 is an apocalyptic number.

11987320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11987320 is an abundant number, since it is smaller than the sum of its proper divisors (14984240).

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

11987320 is a wasteful number, since it uses less digits than its factorization.

11987320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299694 (or 299690 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 11987320 is about 3462.2709310509. The cubic root of 11987320 is about 228.8621813324.

The spelling of 11987320 in words is "eleven million, nine hundred eighty-seven thousand, three hundred twenty".