| Base | Representation |
|---|---|
| bin | 1111011100111… |
| … | …10110010111000 |
| 3 | 100000220122110000 |
| 4 | 13232132302320 |
| 5 | 231141002042 |
| 6 | 20510153000 |
| 7 | 3132540150 |
| oct | 756366270 |
| 9 | 300818400 |
| 10 | 129625272 |
| 11 | 67196427 |
| 12 | 374b2760 |
| 13 | 20b1705a |
| 14 | 13303760 |
| 15 | b5a774c |
| hex | 7b9ecb8 |
129625272 has 240 divisors, whose sum is σ = 450323280. Its totient is φ = 34007040.
The previous prime is 129625259. The next prime is 129625337. The reversal of 129625272 is 272526921.
It is a happy number.
129625272 is a `hidden beast` number, since 1 + 2 + 9 + 625 + 27 + 2 = 666.
It is a super-2 number, since 2×1296252722 = 33605422282147968, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
Its product of digits (30240) is a multiple of the sum of its prime divisors (70).
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 59 ways as a sum of consecutive naturals, for example, 3161572 + ... + 3161612.
It is an arithmetic number, because the mean of its divisors is an integer number (1876347).
Almost surely, 2129625272 is an apocalyptic number.
129625272 is a gapful number since it is divisible by the number (12) 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 129625272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225161640).
129625272 is an abundant number, since it is smaller than the sum of its proper divisors (320698008).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
129625272 is a wasteful number, since it uses less digits than its factorization.
129625272 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 124 (or 70 counting only the distinct ones).
The product of its digits is 30240, while the sum is 36.
The square root of 129625272 is about 11385.3094819596. The cubic root of 129625272 is about 506.0924909171.
The spelling of 129625272 in words is "one hundred twenty-nine million, six hundred twenty-five thousand, two hundred seventy-two".
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