3491328 has 40 divisors (see below), whose sum is σ = 9305208. Its totient is φ = 1163264.

The previous prime is 3491317. The next prime is 3491333. The reversal of 3491328 is 8231943.

It is a junction number, because it is equal to n+sod(n) for n = 3491295 and 3491304.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 400 + ... + 2672.

Almost surely, 2^3491328 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 3491328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4652604).

3491328 is an abundant number, since it is smaller than the sum of its proper divisors (5813880).

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

3491328 is an equidigital number, since it uses as much as digits as its factorization.

3491328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294 (or 2278 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 3491328 is about 1868.5095664727. The cubic root of 3491328 is about 151.7039482207.

The spelling of 3491328 in words is "three million, four hundred ninety-one thousand, three hundred twenty-eight".