3261540 has 48 divisors (see below), whose sum is σ = 9616320. Its totient is φ = 823680.

The previous prime is 3261539. The next prime is 3261547. The reversal of 3261540 is 451623.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3261547) 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, 291 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (200340).

Almost surely, 2^3261540 is an apocalyptic number.

3261540 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 3261540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4808160).

3261540 is an abundant number, since it is smaller than the sum of its proper divisors (6354780).

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

3261540 is a wasteful number, since it uses less digits than its factorization.

3261540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892 (or 2890 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3261540 is about 1805.9734217313. The cubic root of 3261540 is about 148.2999153211.

The spelling of 3261540 in words is "three million, two hundred sixty-one thousand, five hundred forty".