3805212 has 48 divisors (see below), whose sum is σ = 9821952. Its totient is φ = 1140480.

The previous prime is 3805211. The next prime is 3805223. The reversal of 3805212 is 2125083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3805211) 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, 4287 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (204624).

Almost surely, 2^3805212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4910976).

3805212 is an abundant number, since it is smaller than the sum of its proper divisors (6016740).

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

3805212 is a wasteful number, since it uses less digits than its factorization.

3805212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3805212 is about 1950.6952606699. The cubic root of 3805212 is about 156.1203870194.

The spelling of 3805212 in words is "three million, eight hundred five thousand, two hundred twelve".