| Base | Representation |
|---|---|
| bin | 1111011101010… |
| … | …11011011110000 |
| 3 | 100001000021110100 |
| 4 | 13232223123300 |
| 5 | 231144131130 |
| 6 | 20511232400 |
| 7 | 3133144113 |
| oct | 756533360 |
| 9 | 301007410 |
| 10 | 129677040 |
| 11 | 67221309 |
| 12 | 37518700 |
| 13 | 20b3479c |
| 14 | 1331857a |
| 15 | b5b7c60 |
| hex | 7bab6f0 |
129677040 has 120 divisors (see below), whose sum is σ = 437561280. Its totient is φ = 34417152.
The previous prime is 129677029. The next prime is 129677063. The reversal of 129677040 is 40776921.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (120).
It is a super-2 number, since 2×1296770402 = 33632269406323200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 129676986 and 129677004.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279849 + ... + 280311.
It is an arithmetic number, because the mean of its divisors is an integer number (3646344).
Almost surely, 2129677040 is an apocalyptic number.
129677040 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 129677040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218780640).
129677040 is an abundant number, since it is smaller than the sum of its proper divisors (307884240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
129677040 is a wasteful number, since it uses less digits than its factorization.
129677040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 871 (or 862 counting only the distinct ones).
The product of its (nonzero) digits is 21168, while the sum is 36.
The square root of 129677040 is about 11387.5827110059. The cubic root of 129677040 is about 506.1598540908.
The spelling of 129677040 in words is "one hundred twenty-nine million, six hundred seventy-seven thousand, forty".
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