Base | Representation |
---|---|
bin | 1110010011110100… |
… | …11111101001010000 |
3 | 201211102000112112000 |
4 | 13021322133221100 |
5 | 111213211143210 |
6 | 3310155034000 |
7 | 361244233251 |
oct | 71172375120 |
9 | 21742015460 |
10 | 7682521680 |
11 | 3292646279 |
12 | 15a4a3b900 |
13 | 955835922 |
14 | 52c464b28 |
15 | 2ee6d7ac0 |
hex | 1c9e9fa50 |
7682521680 has 480 divisors, whose sum is σ = 29090042880. Its totient is φ = 1861263360.
The previous prime is 7682521669. The next prime is 7682521681. The reversal of 7682521680 is 861252867.
7682521680 is a `hidden beast` number, since 7 + 68 + 2 + 521 + 68 + 0 = 666.
It is a super-2 number, since 2×76825216802 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7682521681) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19351242 + ... + 19351638.
It is an arithmetic number, because the mean of its divisors is an integer number (60604256).
Almost surely, 27682521680 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 7682521680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14545021440).
7682521680 is an abundant number, since it is smaller than the sum of its proper divisors (21407521200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7682521680 is a wasteful number, since it uses less digits than its factorization.
7682521680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 484 (or 455 counting only the distinct ones).
The product of its (nonzero) digits is 322560, while the sum is 45.
The square root of 7682521680 is about 87649.9953223045. The cubic root of 7682521680 is about 1973.1855732537.
The spelling of 7682521680 in words is "seven billion, six hundred eighty-two million, five hundred twenty-one thousand, six hundred eighty".
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