Base | Representation |
---|---|
bin | 100100101101100100101 |
3 | 2021010011212 |
4 | 10211230211 |
5 | 301443411 |
6 | 41441205 |
7 | 13140143 |
oct | 4455445 |
9 | 2233155 |
10 | 1202981 |
11 | 7518aa |
12 | 4a0205 |
13 | 331730 |
14 | 234593 |
15 | 18b68b |
hex | 125b25 |
1202981 has 16 divisors (see below), whose sum is σ = 1385328. Its totient is φ = 1036800.
The previous prime is 1202977. The next prime is 1202987. The reversal of 1202981 is 1892021.
It can be written as a sum of positive squares in 8 ways, for example, as 330625 + 872356 = 575^2 + 934^2 .
It is a cyclic number.
It is not a de Polignac number, because 1202981 - 22 = 1202977 is a prime.
It is a super-2 number, since 2×12029812 = 2894326572722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1202987) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19691 + ... + 19751.
It is an arithmetic number, because the mean of its divisors is an integer number (86583).
21202981 is an apocalyptic number.
It is an amenable number.
1202981 is a deficient number, since it is larger than the sum of its proper divisors (182347).
1202981 is a wasteful number, since it uses less digits than its factorization.
1202981 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 152.
The product of its (nonzero) digits is 288, while the sum is 23.
The square root of 1202981 is about 1096.8049051677. The cubic root of 1202981 is about 106.3537781879.
The spelling of 1202981 in words is "one million, two hundred two thousand, nine hundred eighty-one".
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