5240456640 has 84 divisors (see below), whose sum is σ = 18024997224. Its totient is φ = 1397454336.

The previous prime is 5240456581. The next prime is 5240456677. The reversal of 5240456640 is 466540425.

5240456640 is a `hidden beast` number, since 5 + 2 + 4 + 0 + 4 + 5 + 6 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5240456595 and 5240456604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906922 + ... + 912681.

Almost surely, 2^5240456640 is an apocalyptic number.

It is an amenable number.

5240456640 is an abundant number, since it is smaller than the sum of its proper divisors (12784540584).

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

5240456640 is a wasteful number, since it uses less digits than its factorization.

5240456640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819626 (or 1819613 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 5240456640 is about 72390.9983354284. The cubic root of 5240456640 is about 1736.9595734151.

The spelling of 5240456640 in words is "five billion, two hundred forty million, four hundred fifty-six thousand, six hundred forty".