3921312 has 24 divisors (see below), whose sum is σ = 10293696. Its totient is φ = 1307072.

The previous prime is 3921301. The next prime is 3921343. The reversal of 3921312 is 2131293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20328 + ... + 20519.

It is an arithmetic number, because the mean of its divisors is an integer number (428904).

Almost surely, 2^3921312 is an apocalyptic number.

3921312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3921312 is an abundant number, since it is smaller than the sum of its proper divisors (6372384).

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

3921312 is a wasteful number, since it uses less digits than its factorization.

3921312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40860 (or 40852 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 3921312 is about 1980.2302896381. The cubic root of 3921312 is about 157.6922922192.

The spelling of 3921312 in words is "three million, nine hundred twenty-one thousand, three hundred twelve".