3291072 has 56 divisors (see below), whose sum is σ = 8881872. Its totient is φ = 1075200.

The previous prime is 3291031. The next prime is 3291073. The reversal of 3291072 is 2701923.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291073) 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, 11572 + ... + 11852.

Almost surely, 2^3291072 is an apocalyptic number.

3291072 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 3291072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4440936).

3291072 is an abundant number, since it is smaller than the sum of its proper divisors (5590800).

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

3291072 is a wasteful number, since it uses less digits than its factorization.

3291072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 3291072 is about 1814.1311970197. The cubic root of 3291072 is about 148.7461708404.

Adding to 3291072 its reverse (2701923), we get a palindrome (5992995).

The spelling of 3291072 in words is "three million, two hundred ninety-one thousand, seventy-two".