Base | Representation |
---|---|
bin | 1001100101011… |
… | …0101111111101 |
3 | 2210122102200211 |
4 | 2121112233331 |
5 | 40242414323 |
6 | 3553352421 |
7 | 665463463 |
oct | 231265775 |
9 | 83572624 |
10 | 40201213 |
11 | 20768848 |
12 | 11568711 |
13 | 8437300 |
14 | 54a6833 |
15 | 37e170d |
hex | 2656bfd |
40201213 has 6 divisors (see below), whose sum is σ = 43531674. Its totient is φ = 37108656.
The previous prime is 40201201. The next prime is 40201241. The reversal of 40201213 is 31210204.
It can be written as a sum of positive squares in 3 ways, for example, as 3755844 + 36445369 = 1938^2 + 6037^2 .
It is not a de Polignac number, because 40201213 - 25 = 40201181 is a prime.
It is a super-2 number, since 2×402012132 = 3232275053342738, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (13).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 40201193 and 40201202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40201253) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118770 + ... + 119107.
It is an arithmetic number, because the mean of its divisors is an integer number (7255279).
Almost surely, 240201213 is an apocalyptic number.
It is an amenable number.
40201213 is a deficient number, since it is larger than the sum of its proper divisors (3330461).
40201213 is a wasteful number, since it uses less digits than its factorization.
40201213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 237903 (or 237890 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 13.
The square root of 40201213 is about 6340.4426501625. The cubic root of 40201213 is about 342.5676794522.
Adding to 40201213 its reverse (31210204), we get a palindrome (71411417).
The spelling of 40201213 in words is "forty million, two hundred one thousand, two hundred thirteen".
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