3040312520 has 64 divisors (see below), whose sum is σ = 7869830400. Its totient is φ = 1035475200.

The previous prime is 3040312489. The next prime is 3040312579. The reversal of 3040312520 is 252130403.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 3040312492 and 3040312501.

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, 6326 + ... + 78234.

It is an arithmetic number, because the mean of its divisors is an integer number (122966100).

Almost surely, 2^3040312520 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 3040312520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3934915200).

3040312520 is an abundant number, since it is smaller than the sum of its proper divisors (4829517880).

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

3040312520 is a wasteful number, since it uses less digits than its factorization.

3040312520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72078 (or 72074 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3040312520 is about 55139.0290084981. The cubic root of 3040312520 is about 1448.6809280236.

Adding to 3040312520 its reverse (252130403), we get a palindrome (3292442923).

The spelling of 3040312520 in words is "three billion, forty million, three hundred twelve thousand, five hundred twenty".