Base | Representation |
---|---|
bin | 1111011010000… |
… | …01111101000000 |
3 | 100000012022210120 |
4 | 13231001331000 |
5 | 231041314432 |
6 | 20454100240 |
7 | 3126364362 |
oct | 755017500 |
9 | 300168716 |
10 | 129244992 |
11 | 66a56748 |
12 | 3734a680 |
13 | 20a12c36 |
14 | 13244d32 |
15 | b52ec2c |
hex | 7b41f40 |
129244992 has 112 divisors (see below), whose sum is σ = 365760000. Its totient is φ = 40158720.
The previous prime is 129244963. The next prime is 129245009. The reversal of 129244992 is 299442921.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258759 + ... + 259257.
Almost surely, 2129244992 is an apocalyptic number.
129244992 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 129244992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182880000).
129244992 is an abundant number, since it is smaller than the sum of its proper divisors (236515008).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
129244992 is a wasteful number, since it uses less digits than its factorization.
129244992 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 604 (or 594 counting only the distinct ones).
The product of its digits is 93312, while the sum is 42.
The square root of 129244992 is about 11368.5967471804. The cubic root of 129244992 is about 505.5971004747.
The spelling of 129244992 in words is "one hundred twenty-nine million, two hundred forty-four thousand, nine hundred ninety-two".
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