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212427 = 3223603
BaseRepresentation
bin110011110111001011
3101210101200
4303313023
523244202
64315243
71543215
oct636713
9353350
10212427
11135666
12a2b23
13758c7
14575b5
1542e1c
hex33dcb

212427 has 6 divisors (see below), whose sum is σ = 306852. Its totient is φ = 141612.

The previous prime is 212423. The next prime is 212437. The reversal of 212427 is 724212.

Adding to 212427 its reverse (724212), we get a palindrome (936639).

It is not a de Polignac number, because 212427 - 22 = 212423 is a prime.

It is an Ulam number.

212427 is a lucky number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (212423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11793 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (51142).

2212427 is an apocalyptic number.

212427 is a deficient number, since it is larger than the sum of its proper divisors (94425).

212427 is a wasteful number, since it uses less digits than its factorization.

212427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23609 (or 23606 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 212427 is about 460.8980364462. The cubic root of 212427 is about 59.6673255374.

The spelling of 212427 in words is "two hundred twelve thousand, four hundred twenty-seven", and thus it is an iban number.

Divisors: 1 3 9 23603 70809 212427