3521534240 has 96 divisors (see below), whose sum is σ = 9543308544. Its totient is φ = 1202918400.

The previous prime is 3521534231. The next prime is 3521534251. The reversal of 3521534240 is 424351253.

It is a happy number.

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, 304565 + ... + 315915.

It is an arithmetic number, because the mean of its divisors is an integer number (99409464).

Almost surely, 2^3521534240 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 3521534240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4771654272).

3521534240 is an abundant number, since it is smaller than the sum of its proper divisors (6021774304).

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

3521534240 is a wasteful number, since it uses less digits than its factorization.

3521534240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650 (or 11642 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 3521534240 is about 59342.5162931266. The cubic root of 3521534240 is about 1521.4019613608.

Adding to 3521534240 its reverse (424351253), we get a palindrome (3945885493).

The spelling of 3521534240 in words is "three billion, five hundred twenty-one million, five hundred thirty-four thousand, two hundred forty".