5260263840 has 144 divisors (see below), whose sum is σ = 19331538408. Its totient is φ = 1294829568.

The previous prime is 5260263787. The next prime is 5260263847. The reversal of 5260263840 is 483620625.

5260263840 is a `hidden beast` number, since 5 + 2 + 602 + 6 + 3 + 8 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4706508816 + 553755024 = 68604^2 + 23532^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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 = 5260263795 and 5260263804.

It is not an unprimeable number, because it can be changed into a prime (5260263847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121779 + ... + 159218.

Almost surely, 2^5260263840 is an apocalyptic number.

It is an amenable number.

5260263840 is an abundant number, since it is smaller than the sum of its proper divisors (14071274568).

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

5260263840 is a wasteful number, since it uses less digits than its factorization.

5260263840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281031 (or 281020 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 5260263840 is about 72527.6763725407. The cubic root of 5260263840 is about 1739.1452004297.

The spelling of 5260263840 in words is "five billion, two hundred sixty million, two hundred sixty-three thousand, eight hundred forty".