Base | Representation |
---|---|
bin | 111000001000… |
… | …0101111001110 |
3 | 2001101010120100 |
4 | 1300100233032 |
5 | 30013204221 |
6 | 2530431530 |
7 | 505065630 |
oct | 160205716 |
9 | 61333510 |
10 | 29428686 |
11 | 15680231 |
12 | 9a325a6 |
13 | 6134c31 |
14 | 3ca0a50 |
15 | 28b4926 |
hex | 1c10bce |
29428686 has 48 divisors (see below), whose sum is σ = 73202688. Its totient is φ = 8370000.
The previous prime is 29428667. The next prime is 29428691. The reversal of 29428686 is 68682492.
29428686 is a `hidden beast` number, since 294 + 286 + 86 = 666.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38811 + ... + 39561.
It is an arithmetic number, because the mean of its divisors is an integer number (1525056).
Almost surely, 229428686 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 29428686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36601344).
29428686 is an abundant number, since it is smaller than the sum of its proper divisors (43774002).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
29428686 is a wasteful number, since it uses less digits than its factorization.
29428686 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1077 (or 1074 counting only the distinct ones).
The product of its digits is 331776, while the sum is 45.
The square root of 29428686 is about 5424.8212873790. The cubic root of 29428686 is about 308.7381449550.
It can be divided in two parts, 2942 and 8686, that added together give a triangular number (11628 = T152).
The spelling of 29428686 in words is "twenty-nine million, four hundred twenty-eight thousand, six hundred eighty-six".
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