3520830208 has 144 divisors (see below), whose sum is σ = 8435015680. Its totient is φ = 1434931200.

The previous prime is 3520830199. The next prime is 3520830221. The reversal of 3520830208 is 8020380253.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 3520830208.

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, 3388153 + ... + 3389191.

Almost surely, 2^3520830208 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 3520830208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4217507840).

3520830208 is an abundant number, since it is smaller than the sum of its proper divisors (4914185472).

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

3520830208 is a wasteful number, since it uses less digits than its factorization.

3520830208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 3520830208 is about 59336.5840607631. The cubic root of 3520830208 is about 1521.3005673868.

The spelling of 3520830208 in words is "three billion, five hundred twenty million, eight hundred thirty thousand, two hundred eight".