5285744640 has 624 divisors, whose sum is σ = 20916537600. Its totient is φ = 1265172480.

The previous prime is 5285744623. The next prime is 5285744657. The reversal of 5285744640 is 464475825.

It is an interprime number because it is at equal distance from previous prime (5285744623) and next prime (5285744657).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66908121 + ... + 66908199.

Almost surely, 2^5285744640 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 5285744640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10458268800).

5285744640 is an abundant number, since it is smaller than the sum of its proper divisors (15630792960).

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

5285744640 is a wasteful number, since it uses less digits than its factorization.

5285744640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The square root of 5285744640 is about 72703.1267553191. The cubic root of 5285744640 is about 1741.9488271698.

The spelling of 5285744640 in words is "five billion, two hundred eighty-five million, seven hundred forty-four thousand, six hundred forty".