3299840 has 40 divisors (see below), whose sum is σ = 7918020. Its totient is φ = 1318912.

The previous prime is 3299837. The next prime is 3299851. The reversal of 3299840 is 489923.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 30976 = 1808^2 + 176^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 3299840.

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, 1916 + ... + 3204.

Almost surely, 2^3299840 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 3299840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3959010).

3299840 is an abundant number, since it is smaller than the sum of its proper divisors (4618180).

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

3299840 is an equidigital number, since it uses as much as digits as its factorization.

3299840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3299840 is about 1816.5461733741. The cubic root of 3299840 is about 148.8781491061.

The spelling of 3299840 in words is "three million, two hundred ninety-nine thousand, eight hundred forty".