Base | Representation |
---|---|
bin | 11011011101110100000001 |
3 | 111112210112201 |
4 | 123131310001 |
5 | 3320400001 |
6 | 414153201 |
7 | 115125154 |
oct | 33356401 |
9 | 14483481 |
10 | 7200001 |
11 | 4078516 |
12 | 24b2801 |
13 | 1651273 |
14 | d55c9b |
15 | 973501 |
hex | 6ddd01 |
7200001 has 8 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 7063152.
The previous prime is 7199957. The next prime is 7200007. The reversal of 7200001 is 1000027.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-7200001 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7200007) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18315 + ... + 18703.
It is an arithmetic number, because the mean of its divisors is an integer number (917280).
Almost surely, 27200001 is an apocalyptic number.
It is an amenable number.
7200001 is a deficient number, since it is larger than the sum of its proper divisors (138239).
7200001 is a wasteful number, since it uses less digits than its factorization.
7200001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 695.
The product of its (nonzero) digits is 14, while the sum is 10.
The square root of 7200001 is about 2683.2817593387. The cubic root of 7200001 is about 193.0978858608.
Adding to 7200001 its reverse (1000027), we get a palindrome (8200028).
The spelling of 7200001 in words is "seven million, two hundred thousand, one".
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