3040206520 has 64 divisors (see below), whose sum is σ = 7378187040. Its totient is φ = 1120780800.

The previous prime is 3040206517. The next prime is 3040206529. The reversal of 3040206520 is 256020403.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3040206491 and 3040206500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3040206529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355090 + ... + 363550.

Almost surely, 2^3040206520 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 3040206520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3689093520).

3040206520 is an abundant number, since it is smaller than the sum of its proper divisors (4337980520).

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

3040206520 is a wasteful number, since it uses less digits than its factorization.

3040206520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176 (or 9172 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3040206520 is about 55138.0677934945. The cubic root of 3040206520 is about 1448.6640918199.

Adding to 3040206520 its reverse (256020403), we get a palindrome (3296226923).

The spelling of 3040206520 in words is "three billion, forty million, two hundred six thousand, five hundred twenty".