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470189 = 2320443
BaseRepresentation
bin1110010110010101101
3212212222102
41302302231
5110021224
614024445
73665546
oct1626255
9785872
10470189
112a1295
121a8125
13136025
14c34cd
15944ae
hex72cad

470189 has 4 divisors (see below), whose sum is σ = 490656. Its totient is φ = 449724.

The previous prime is 470179. The next prime is 470201. The reversal of 470189 is 981074.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981074 = 2490537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-470189 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470149) 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 3 ways as a sum of consecutive naturals, for example, 10199 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (122664).

2470189 is an apocalyptic number.

It is an amenable number.

470189 is a deficient number, since it is larger than the sum of its proper divisors (20467).

470189 is a wasteful number, since it uses less digits than its factorization.

470189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20466.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 470189 is about 685.7032886023. The cubic root of 470189 is about 77.7602213586.

The spelling of 470189 in words is "four hundred seventy thousand, one hundred eighty-nine".

Divisors: 1 23 20443 470189