5647728240 has 900 divisors, whose sum is σ = 25221974232. Its totient is φ = 1173553920.

The previous prime is 5647728197. The next prime is 5647728259. The reversal of 5647728240 is 428277465.

It is a happy number.

5647728240 is a `hidden beast` number, since 564 + 7 + 7 + 2 + 82 + 4 + 0 = 666.

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 179 ways as a sum of consecutive naturals, for example, 513429835 + ... + 513429845.

Almost surely, 2^5647728240 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 5647728240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12610987116).

5647728240 is an abundant number, since it is smaller than the sum of its proper divisors (19574245992).

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

5647728240 is an equidigital number, since it uses as much as digits as its factorization.

5647728240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 5647728240 is about 75151.3688498087. The cubic root of 5647728240 is about 1780.8387496018.

The spelling of 5647728240 in words is "five billion, six hundred forty-seven million, seven hundred twenty-eight thousand, two hundred forty".