Base | Representation |
---|---|
bin | 100001100100011110… |
… | …1001011000110000000 |
3 | 20220002010212000111100 |
4 | 1003020331023012000 |
5 | 2140120241044120 |
6 | 53041303214400 |
7 | 5131324005516 |
oct | 1031075130600 |
9 | 226063760440 |
10 | 72090956160 |
11 | 28634513413 |
12 | 11b7b147400 |
13 | 6a4b6b9c12 |
14 | 36bc5ca4b6 |
15 | 1d1de8d490 |
hex | 10c8f4b180 |
72090956160 has 768 divisors, whose sum is σ = 278396352000. Its totient is φ = 17104109568.
The previous prime is 72090956159. The next prime is 72090956173. The reversal of 72090956160 is 6165909027.
It is a happy number.
72090956160 is a `hidden beast` number, since 7 + 20 + 9 + 0 + 9 + 5 + 616 + 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 95 ways as a sum of consecutive naturals, for example, 150502801 + ... + 150503279.
It is an arithmetic number, because the mean of its divisors is an integer number (362495250).
Almost surely, 272090956160 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 72090956160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139198176000).
72090956160 is an abundant number, since it is smaller than the sum of its proper divisors (206305395840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72090956160 is a wasteful number, since it uses less digits than its factorization.
72090956160 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 603 (or 588 counting only the distinct ones).
The product of its (nonzero) digits is 204120, while the sum is 45.
The spelling of 72090956160 in words is "seventy-two billion, ninety million, nine hundred fifty-six thousand, one hundred sixty".
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