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213950 = 25211389
BaseRepresentation
bin110100001110111110
3101212111002
4310032332
523321300
64330302
71550522
oct641676
9355432
10213950
11136820
12a3992
13764c9
1457d82
15435d5
hex343be

213950 has 24 divisors (see below), whose sum is σ = 435240. Its totient is φ = 77600.

The previous prime is 213949. The next prime is 213953. The reversal of 213950 is 59312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (18135).

2213950 is an apocalyptic number.

213950 is an abundant number, since it is smaller than the sum of its proper divisors (221290).

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

213950 is a wasteful number, since it uses less digits than its factorization.

213950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 213950 is about 462.5472948791. The cubic root of 213950 is about 59.8095815044.

The spelling of 213950 in words is "two hundred thirteen thousand, nine hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 275 389 550 778 1945 3890 4279 8558 9725 19450 21395 42790 106975 213950