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10204213 = 17535821
BaseRepresentation
bin100110111011…
…010000110101
3201012102112211
4212323100311
510103013323
61002413421
7152506615
oct46732065
921172484
1010204213
11583a638
123501271
1321637c6
1414d8a45
15d6870d
hex9bb435

10204213 has 4 divisors (see below), whose sum is σ = 10211788. Its totient is φ = 10196640.

The previous prime is 10204211. The next prime is 10204219. The reversal of 10204213 is 31240201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31240201 = 38980309.

It can be written as a sum of positive squares in 2 ways, for example, as 4088484 + 6115729 = 2022^2 + 2473^2 .

It is a cyclic number.

It is not a de Polignac number, because 10204213 - 21 = 10204211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10204193 and 10204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158 + ... + 4663.

It is an arithmetic number, because the mean of its divisors is an integer number (2552947).

Almost surely, 210204213 is an apocalyptic number.

It is an amenable number.

10204213 is a deficient number, since it is larger than the sum of its proper divisors (7575).

10204213 is an equidigital number, since it uses as much as digits as its factorization.

10204213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10204213 is about 3194.4033871758. The cubic root of 10204213 is about 216.9001430597.

Adding to 10204213 its reverse (31240201), we get a palindrome (41444414).

The spelling of 10204213 in words is "ten million, two hundred four thousand, two hundred thirteen".

Divisors: 1 1753 5821 10204213