2947328 has 36 divisors (see below), whose sum is σ = 6101340. Its totient is φ = 1419264.

The previous prime is 2947291. The next prime is 2947331. The reversal of 2947328 is 8237492.

It can be written as a sum of positive squares in 2 ways, for example, as 1763584 + 1183744 = 1328^2 + 1088^2 .

It is a congruent number.

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, 7226 + ... + 7622.

2^2947328 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 2947328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3050670).

2947328 is an abundant number, since it is smaller than the sum of its proper divisors (3154012).

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

2947328 is an equidigital number, since it uses as much as digits as its factorization.

2947328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 428 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 2947328 is about 1716.7783782422. The cubic root of 2947328 is about 143.3758998628.

The spelling of 2947328 in words is "two million, nine hundred forty-seven thousand, three hundred twenty-eight".