3213072 has 60 divisors (see below), whose sum is σ = 9183564. Its totient is φ = 1048320.

The previous prime is 3213059. The next prime is 3213073. The reversal of 3213072 is 2703123.

3213072 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 2359296 = 924^2 + 1536^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3213073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7422 + ... + 7842.

Almost surely, 2^3213072 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 3213072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4591782).

3213072 is an abundant number, since it is smaller than the sum of its proper divisors (5970492).

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

3213072 is a wasteful number, since it uses less digits than its factorization.

3213072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 3213072 is about 1792.5043933001. The cubic root of 3213072 is about 147.5616442518.

Adding to 3213072 its reverse (2703123), we get a palindrome (5916195).

The spelling of 3213072 in words is "three million, two hundred thirteen thousand, seventy-two".