3000405520 has 80 divisors (see below), whose sum is σ = 8392141440. Its totient is φ = 974564352.

The previous prime is 3000405487. The next prime is 3000405521. The reversal of 3000405520 is 255040003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (3000405521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130357 + ... + 151636.

It is an arithmetic number, because the mean of its divisors is an integer number (104901768).

Almost surely, 2^3000405520 is an apocalyptic number.

It is an amenable number.

3000405520 is an abundant number, since it is smaller than the sum of its proper divisors (5391735920).

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

3000405520 is a wasteful number, since it uses less digits than its factorization.

3000405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282032 (or 282026 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 3000405520 is about 54775.9574996184. The cubic root of 3000405520 is about 1442.3145519402.

Adding to 3000405520 its reverse (255040003), we get a palindrome (3255445523).

The spelling of 3000405520 in words is "three billion, four hundred five thousand, five hundred twenty".