3222912 has 128 divisors (see below), whose sum is σ = 10771200. Its totient is φ = 829440.

The previous prime is 3222899. The next prime is 3222917. The reversal of 3222912 is 2192223.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

Its product of digits (432) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3222917) 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, 29514 + ... + 29622.

It is an arithmetic number, because the mean of its divisors is an integer number (84150).

Almost surely, 2^3222912 is an apocalyptic number.

3222912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3222912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5385600).

3222912 is an abundant number, since it is smaller than the sum of its proper divisors (7548288).

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

3222912 is a wasteful number, since it uses less digits than its factorization.

3222912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 132 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 3222912 is about 1795.2470582068. The cubic root of 3222912 is about 147.7121260798.

The spelling of 3222912 in words is "three million, two hundred twenty-two thousand, nine hundred twelve".