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213427 = 1947239
BaseRepresentation
bin110100000110110011
3101211202201
4310012303
523312202
64324031
71546144
oct640663
9354681
10213427
11136395
12a3617
13761b6
1457acb
1543387
hex341b3

213427 has 8 divisors (see below), whose sum is σ = 230400. Its totient is φ = 197064.

The previous prime is 213407. The next prime is 213449. The reversal of 213427 is 724312.

213427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-213427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a d-powerful number, because it can be written as 23 + 1 + 48 + 3 + 217 + 75 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774 + ... + 1012.

It is an arithmetic number, because the mean of its divisors is an integer number (28800).

2213427 is an apocalyptic number.

213427 is a deficient number, since it is larger than the sum of its proper divisors (16973).

213427 is a wasteful number, since it uses less digits than its factorization.

213427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its digits is 336, while the sum is 19.

The square root of 213427 is about 461.9816013652. The cubic root of 213427 is about 59.7608069713.

Adding to 213427 its reverse (724312), we get a palindrome (937739).

It can be divided in two parts, 213 and 427, that multiplied together give a triangular number (90951 = T426).

The spelling of 213427 in words is "two hundred thirteen thousand, four hundred twenty-seven".

Divisors: 1 19 47 239 893 4541 11233 213427