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5720647680 = 21135511219
BaseRepresentation
bin1010101001111101…
…00010100000000000
3112202200102000100000
411110332202200000
543203441211210
62343353200000
7261522463056
oct52476424000
915680360300
105720647680
11247617a300
121137a00000
1370224a137
143c3a921d6
15237356ac0
hex154fa2800

5720647680 has 864 divisors, whose sum is σ = 23789656800. Its totient is φ = 1313832960.

The previous prime is 5720647613. The next prime is 5720647693. The reversal of 5720647680 is 867460275.

5720647680 is a `hidden beast` number, since 572 + 0 + 6 + 4 + 76 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 301086711 + ... + 301086729.

It is an arithmetic number, because the mean of its divisors is an integer number (27534325).

Almost surely, 25720647680 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 5720647680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11894828400).

5720647680 is an abundant number, since it is smaller than the sum of its proper divisors (18069009120).

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

5720647680 is a wasteful number, since it uses less digits than its factorization.

5720647680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 5720647680 is about 75634.9633436812. The cubic root of 5720647680 is about 1788.4703055426.

The spelling of 5720647680 in words is "five billion, seven hundred twenty million, six hundred forty-seven thousand, six hundred eighty".