4085312 has 56 divisors (see below), whose sum is σ = 10119360. Its totient is φ = 1589760.

The previous prime is 4085311. The next prime is 4085339. The reversal of 4085312 is 2135804.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (4085311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4514 + ... + 5342.

Almost surely, 2^4085312 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 4085312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5059680).

4085312 is an abundant number, since it is smaller than the sum of its proper divisors (6034048).

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

4085312 is a wasteful number, since it uses less digits than its factorization.

4085312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4085312 is about 2021.2154758956. The cubic root of 4085312 is about 159.8607121115.

The spelling of 4085312 in words is "four million, eighty-five thousand, three hundred twelve".