3275640 has 96 divisors (see below), whose sum is σ = 11072880. Its totient is φ = 870912.

The previous prime is 3275633. The next prime is 3275651. The reversal of 3275640 is 465723.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9552 + ... + 9888.

Almost surely, 2^3275640 is an apocalyptic number.

3275640 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 3275640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5536440).

3275640 is an abundant number, since it is smaller than the sum of its proper divisors (7797240).

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

3275640 is a wasteful number, since it uses less digits than its factorization.

3275640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3275640 is about 1809.8729237159. The cubic root of 3275640 is about 148.5133137742.

The spelling of 3275640 in words is "three million, two hundred seventy-five thousand, six hundred forty".