3215928 has 32 divisors (see below), whose sum is σ = 8213760. Its totient is φ = 1048800.

The previous prime is 3215923. The next prime is 3215939. The reversal of 3215928 is 8295123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3215895 and 3215904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215923) 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, 298 + ... + 2553.

It is an arithmetic number, because the mean of its divisors is an integer number (256680).

Almost surely, 2^3215928 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 3215928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4106880).

3215928 is an abundant number, since it is smaller than the sum of its proper divisors (4997832).

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

3215928 is a wasteful number, since it uses less digits than its factorization.

3215928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2903 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3215928 is about 1793.3008671163. The cubic root of 3215928 is about 147.6053522930.

The spelling of 3215928 in words is "three million, two hundred fifteen thousand, nine hundred twenty-eight".