8420480240 has 20 divisors (see below), whose sum is σ = 19577616744. Its totient is φ = 3368192064.

The previous prime is 8420480209. The next prime is 8420480261. The reversal of 8420480240 is 420840248.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 8420480197 and 8420480206.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52627922 + ... + 52628081.

Almost surely, 2^8420480240 is an apocalyptic number.

8420480240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8420480240 is an abundant number, since it is smaller than the sum of its proper divisors (11157136504).

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

8420480240 is a wasteful number, since it uses less digits than its factorization.

8420480240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105256016 (or 105256010 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 8420480240 is about 91763.1747489155. The cubic root of 8420480240 is about 2034.4434395693.

The spelling of 8420480240 in words is "eight billion, four hundred twenty million, four hundred eighty thousand, two hundred forty".