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213044 = 221317241
BaseRepresentation
bin110100000000110100
3101211020112
4310000310
523304134
64322152
71545056
oct640064
9354215
10213044
11136077
12a3358
1375c80
14578d6
15431ce
hex34034

213044 has 24 divisors (see below), whose sum is σ = 426888. Its totient is φ = 92160.

The previous prime is 213043. The next prime is 213067. The reversal of 213044 is 440312.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 168100 = 212^2 + 410^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213043) 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, 764 + ... + 1004.

It is an arithmetic number, because the mean of its divisors is an integer number (17787).

2213044 is an apocalyptic number.

It is an amenable number.

213044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213044 is a wasteful number, since it uses less digits than its factorization.

213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 213044 is about 461.5668965600. The cubic root of 213044 is about 59.7250381542.

Adding to 213044 its reverse (440312), we get a palindrome (653356).

The spelling of 213044 in words is "two hundred thirteen thousand, forty-four".

Divisors: 1 2 4 13 17 26 34 52 68 221 241 442 482 884 964 3133 4097 6266 8194 12532 16388 53261 106522 213044