3520232320 has 128 divisors (see below), whose sum is σ = 9376819200. Its totient is φ = 1252730880.

The previous prime is 3520232291. The next prime is 3520232369. The reversal of 3520232320 is 232320253.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 3520232291 and 3520232300.

It is a congruent 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, 325561 + ... + 336199.

It is an arithmetic number, because the mean of its divisors is an integer number (73256400).

Almost surely, 2^3520232320 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 3520232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4688409600).

3520232320 is an abundant number, since it is smaller than the sum of its proper divisors (5856586880).

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

3520232320 is a wasteful number, since it uses less digits than its factorization.

3520232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10716 (or 10704 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 3520232320 is about 59331.5457408620. The cubic root of 3520232320 is about 1521.2144495500.

Adding to 3520232320 its reverse (232320253), we get a palindrome (3752552573).

The spelling of 3520232320 in words is "three billion, five hundred twenty million, two hundred thirty-two thousand, three hundred twenty".