Base | Representation |
---|---|
bin | 110000011011… |
… | …000111011100 |
3 | 212212220212102 |
4 | 300123013130 |
5 | 11222201410 |
6 | 1132024232 |
7 | 212616455 |
oct | 60330734 |
9 | 25786772 |
10 | 12693980 |
11 | 71901a2 |
12 | 4302078 |
13 | 2825b40 |
14 | 198612c |
15 | 11ab2a5 |
hex | c1b1dc |
12693980 has 24 divisors (see below), whose sum is σ = 28708512. Its totient is φ = 4686912.
The previous prime is 12693959. The next prime is 12693991. The reversal of 12693980 is 8939621.
12693980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×126939802 = 322274256480800, which contains 22 as substring.
It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24152 + ... + 24671.
It is an arithmetic number, because the mean of its divisors is an integer number (1196188).
Almost surely, 212693980 is an apocalyptic number.
12693980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12693980 is an abundant number, since it is smaller than the sum of its proper divisors (16014532).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12693980 is a wasteful number, since it uses less digits than its factorization.
12693980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48845 (or 48843 counting only the distinct ones).
The product of its (nonzero) digits is 23328, while the sum is 38.
The square root of 12693980 is about 3562.8612097582. The cubic root of 12693980 is about 233.2737852578.
The spelling of 12693980 in words is "twelve million, six hundred ninety-three thousand, nine hundred eighty".
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