11805212 has 12 divisors (see below), whose sum is σ = 21163296. Its totient is φ = 5758560.

The previous prime is 11805197. The next prime is 11805217. The reversal of 11805212 is 21250811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11805217) 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, 35828 + ... + 36155.

It is an arithmetic number, because the mean of its divisors is an integer number (1763608).

Almost surely, 2^11805212 is an apocalyptic number.

It is an amenable number.

11805212 is a deficient number, since it is larger than the sum of its proper divisors (9358084).

11805212 is a wasteful number, since it uses less digits than its factorization.

11805212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72028 (or 72026 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 11805212 is about 3435.8713596408. The cubic root of 11805212 is about 227.6973258783.

The spelling of 11805212 in words is "eleven million, eight hundred five thousand, two hundred twelve".