11965720 has 32 divisors (see below), whose sum is σ = 28995120. Its totient is φ = 4417920.

The previous prime is 11965697. The next prime is 11965741. The reversal of 11965720 is 2756911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10986 + ... + 12025.

Almost surely, 2^11965720 is an apocalyptic number.

11965720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11965720 is an abundant number, since it is smaller than the sum of its proper divisors (17029400).

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

11965720 is a wasteful number, since it uses less digits than its factorization.

11965720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23035 (or 23031 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 11965720 is about 3459.1501846552. The cubic root of 11965720 is about 228.7246361239.

The spelling of 11965720 in words is "eleven million, nine hundred sixty-five thousand, seven hundred twenty".