5426643240 has 96 divisors (see below), whose sum is σ = 17738739720. Its totient is φ = 1438723584.

The previous prime is 5426643199. The next prime is 5426643247. The reversal of 5426643240 is 423466245.

5426643240 is a `hidden beast` number, since 5 + 4 + 2 + 6 + 643 + 2 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5245525476 + 181117764 = 72426^2 + 13458^2 .

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 = 5426643195 and 5426643204.

It is not an unprimeable number, because it can be changed into a prime (5426643247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18714 + ... + 105846.

Almost surely, 2^5426643240 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 5426643240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8869369860).

5426643240 is an abundant number, since it is smaller than the sum of its proper divisors (12312096480).

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

5426643240 is a wasteful number, since it uses less digits than its factorization.

5426643240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87323 (or 87316 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 5426643240 is about 73665.7535086691. The cubic root of 5426643240 is about 1757.2912921828.

The spelling of 5426643240 in words is "five billion, four hundred twenty-six million, six hundred forty-three thousand, two hundred forty".