3530540 has 48 divisors (see below), whose sum is σ = 8222592. Its totient is φ = 1264896.

The previous prime is 3530539. The next prime is 3530563. The reversal of 3530540 is 450353.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9437 + ... + 9803.

It is an arithmetic number, because the mean of its divisors is an integer number (171304).

Almost surely, 2^3530540 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 3530540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4111296).

3530540 is an abundant number, since it is smaller than the sum of its proper divisors (4692052).

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

3530540 is a wasteful number, since it uses less digits than its factorization.

3530540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 3530540 is about 1878.9731238099. The cubic root of 3530540 is about 152.2697771356.

Adding to 3530540 its reverse (450353), we get a palindrome (3980893).

The spelling of 3530540 in words is "three million, five hundred thirty thousand, five hundred forty".