Base | Representation |
---|---|
bin | 110010011000… |
… | …011110000001 |
3 | 220212000011220 |
4 | 302120132001 |
5 | 11340114200 |
6 | 1151025253 |
7 | 220155420 |
oct | 62303601 |
9 | 26760156 |
10 | 13207425 |
11 | 7500a30 |
12 | 450b229 |
13 | 297575a |
14 | 1a7b2b7 |
15 | 125d4a0 |
hex | c98781 |
13207425 has 48 divisors (see below), whose sum is σ = 27236352. Its totient is φ = 5486400.
The previous prime is 13207391. The next prime is 13207429. The reversal of 13207425 is 52470231.
It is not a de Polignac number, because 13207425 - 26 = 13207361 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13207395 and 13207404.
It is not an unprimeable number, because it can be changed into a prime (13207429) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4632 + ... + 6918.
It is an arithmetic number, because the mean of its divisors is an integer number (567424).
Almost surely, 213207425 is an apocalyptic number.
13207425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13207425 is an abundant number, since it is smaller than the sum of its proper divisors (14028927).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13207425 is a wasteful number, since it uses less digits than its factorization.
13207425 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2318 (or 2313 counting only the distinct ones).
The product of its (nonzero) digits is 1680, while the sum is 24.
The square root of 13207425 is about 3634.2021132568. The cubic root of 13207425 is about 236.3774542532.
Adding to 13207425 its reverse (52470231), we get a palindrome (65677656).
The spelling of 13207425 in words is "thirteen million, two hundred seven thousand, four hundred twenty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •