Base | Representation |
---|---|
bin | 101111010111… |
… | …000111000000 |
3 | 212100202202112 |
4 | 233113013000 |
5 | 11134243144 |
6 | 1122034452 |
7 | 210346400 |
oct | 57270700 |
9 | 25322675 |
10 | 12415424 |
11 | 700a98a |
12 | 41a8a28 |
13 | 2759108 |
14 | 1912800 |
15 | 115399e |
hex | bd71c0 |
12415424 has 84 divisors (see below), whose sum is σ = 29708856. Its totient is φ = 5128704.
The previous prime is 12415421. The next prime is 12415439. The reversal of 12415424 is 42451421.
12415424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a self number, because there is not a number n which added to its sum of digits gives 12415424.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12415421) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115979 + ... + 116085.
Almost surely, 212415424 is an apocalyptic number.
12415424 is a gapful number since it is divisible by the number (14) 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 12415424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14854428).
12415424 is an abundant number, since it is smaller than the sum of its proper divisors (17293432).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12415424 is a wasteful number, since it uses less digits than its factorization.
12415424 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 170 (or 153 counting only the distinct ones).
The product of its digits is 1280, while the sum is 23.
The square root of 12415424 is about 3523.5527525496. The cubic root of 12415424 is about 231.5548340269.
Adding to 12415424 its reverse (42451421), we get a palindrome (54866845).
The spelling of 12415424 in words is "twelve million, four hundred fifteen thousand, four hundred twenty-four".
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