3275840 has 56 divisors (see below), whose sum is σ = 8092440. Its totient is φ = 1261568.

The previous prime is 3275819. The next prime is 3275843. The reversal of 3275840 is 485723.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 262144 + 3013696 = 512^2 + 1736^2 .

It is a super-2 number, since 2×3275840² = 21462255411200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3275843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9104 + ... + 9456.

Almost surely, 2^3275840 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 3275840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4046220).

3275840 is an abundant number, since it is smaller than the sum of its proper divisors (4816600).

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

3275840 is a wasteful number, since it uses less digits than its factorization.

3275840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 3275840 is about 1809.9281753705. The cubic root of 3275840 is about 148.5163362938.

The spelling of 3275840 in words is "three million, two hundred seventy-five thousand, eight hundred forty".