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4208213 = 23318061
BaseRepresentation
bin10000000011011001010101
321220210120202
4100003121111
52034130323
6230110245
750524562
oct20033125
97823522
104208213
112414769
1214ab385
13b44589
147b7869
15581d28
hex403655

4208213 has 4 divisors (see below), whose sum is σ = 4226508. Its totient is φ = 4189920.

The previous prime is 4208209. The next prime is 4208221. The reversal of 4208213 is 3128024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 2067844 = 1463^2 + 1438^2 .

It is a cyclic number.

It is not a de Polignac number, because 4208213 - 22 = 4208209 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 (4208273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8798 + ... + 9263.

It is an arithmetic number, because the mean of its divisors is an integer number (1056627).

Almost surely, 24208213 is an apocalyptic number.

It is an amenable number.

4208213 is a deficient number, since it is larger than the sum of its proper divisors (18295).

4208213 is a wasteful number, since it uses less digits than its factorization.

4208213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4208213 is about 2051.3929413937. The cubic root of 4208213 is about 161.4479635028.

The spelling of 4208213 in words is "four million, two hundred eight thousand, two hundred thirteen".

Divisors: 1 233 18061 4208213