10404240520 has 32 divisors (see below), whose sum is σ = 23793309720. Its totient is φ = 4093470720.

The previous prime is 10404240503. The next prime is 10404240521. The reversal of 10404240520 is 2504240401.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4051831716 + 6352408804 = 63654^2 + 79702^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10404240491 and 10404240500.

It is not an unprimeable number, because it can be changed into a prime (10404240521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129577 + ... + 2134456.

Almost surely, 2^10404240520 is an apocalyptic number.

10404240520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10404240520 is an abundant number, since it is smaller than the sum of its proper divisors (13389069200).

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

10404240520 is a wasteful number, since it uses less digits than its factorization.

10404240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264105 (or 4264101 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 10404240520 its reverse (2504240401), we get a palindrome (12908480921).

The spelling of 10404240520 in words is "ten billion, four hundred four million, two hundred forty thousand, five hundred twenty".