Base | Representation |
---|---|
bin | 111100011000110110… |
… | …0001110100000110000 |
3 | 110101201210212112200201 |
4 | 1320301230032200300 |
5 | 4111042232234430 |
6 | 135324142124544 |
7 | 12240441505336 |
oct | 1706154164060 |
9 | 411653775621 |
10 | 129682696240 |
11 | 4aaa8557119 |
12 | 21172580754 |
13 | c2c9228926 |
14 | 63c32adb56 |
15 | 35900878ca |
hex | 1e31b0e830 |
129682696240 has 80 divisors (see below), whose sum is σ = 309168399456. Its totient is φ = 50570956800.
The previous prime is 129682696237. The next prime is 129682696271. The reversal of 129682696240 is 42696286921.
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-2 number, since 2×1296826962402 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433855 + ... + 669025.
Almost surely, 2129682696240 is an apocalyptic number.
129682696240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 129682696240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154584199728).
129682696240 is an abundant number, since it is smaller than the sum of its proper divisors (179485703216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
129682696240 is a wasteful number, since it uses less digits than its factorization.
129682696240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 235358 (or 235352 counting only the distinct ones).
The product of its (nonzero) digits is 4478976, while the sum is 55.
The spelling of 129682696240 in words is "one hundred twenty-nine billion, six hundred eighty-two million, six hundred ninety-six thousand, two hundred forty".
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