3296640 has 128 divisors (see below), whose sum is σ = 11236320. Its totient is φ = 819200.

The previous prime is 3296603. The next prime is 3296641. The reversal of 3296640 is 466923.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3296598 and 3296607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3296641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32590 + ... + 32690.

Almost surely, 2^3296640 is an apocalyptic number.

3296640 is a gapful number since it is divisible by the number (30) 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 3296640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5618160).

3296640 is an abundant number, since it is smaller than the sum of its proper divisors (7939680).

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

3296640 is a wasteful number, since it uses less digits than its factorization.

3296640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3296640 is about 1815.6651673698. The cubic root of 3296640 is about 148.8300089782.

The spelling of 3296640 in words is "three million, two hundred ninety-six thousand, six hundred forty".