11965830 has 32 divisors (see below), whose sum is σ = 28905984. Its totient is φ = 3170016.

The previous prime is 11965817. The next prime is 11965831. The reversal of 11965830 is 3856911.

11965830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11965791 and 11965800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965831) 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, 3667 + ... + 6113.

It is an arithmetic number, because the mean of its divisors is an integer number (903312).

Almost surely, 2^11965830 is an apocalyptic number.

11965830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11965830 is an abundant number, since it is smaller than the sum of its proper divisors (16940154).

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

11965830 is a wasteful number, since it uses less digits than its factorization.

11965830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 11965830 is about 3459.1660844776. The cubic root of 11965830 is about 228.7253370048.

The spelling of 11965830 in words is "eleven million, nine hundred sixty-five thousand, eight hundred thirty".