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30706956288 = 2113223113641
BaseRepresentation
bin11100100110010001…
…101111100000000000
32221021000120000002100
4130212101233200000
51000341440100123
622035004350400
72134642551621
oct344621574000
987230500070
1030706956288
1112028304828
125b4b845400
132b8499b828
1416b42b3a48
15beac22643
hex72646f800

30706956288 has 288 divisors, whose sum is σ = 93507916320. Its totient is φ = 9688842240.

The previous prime is 30706956283. The next prime is 30706956289. The reversal of 30706956288 is 88265960703.

It is a happy number.

30706956288 is a `hidden beast` number, since 3 + 0 + 7 + 0 + 6 + 9 + 5 + 628 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30706956281) 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, 47904448 + ... + 47905088.

It is an arithmetic number, because the mean of its divisors is an integer number (324680265).

Almost surely, 230706956288 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 30706956288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46753958160).

30706956288 is an abundant number, since it is smaller than the sum of its proper divisors (62800960032).

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

30706956288 is a wasteful number, since it uses less digits than its factorization.

30706956288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 30706956288 in words is "thirty billion, seven hundred six million, nine hundred fifty-six thousand, two hundred eighty-eight".