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428201 = 3771163
BaseRepresentation
bin1101000100010101001
3210202101022
41220202221
5102200301
613102225
73432254
oct1504251
9722338
10428201
11272794
12187975
1311cb97
14b209b
1586d1b
hex688a9

428201 has 8 divisors (see below), whose sum is σ = 448704. Its totient is φ = 408240.

The previous prime is 428177. The next prime is 428221. The reversal of 428201 is 102824.

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

It is a cyclic number.

It is not a de Polignac number, because 428201 - 26 = 428137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428201.

It is not an unprimeable number, because it can be changed into a prime (428221) 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, 2546 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (56088).

2428201 is an apocalyptic number.

It is an amenable number.

428201 is a deficient number, since it is larger than the sum of its proper divisors (20503).

428201 is a wasteful number, since it uses less digits than its factorization.

428201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 428201 is about 654.3706900527. The cubic root of 428201 is about 75.3730157880.

The spelling of 428201 in words is "four hundred twenty-eight thousand, two hundred one".

Divisors: 1 37 71 163 2627 6031 11573 428201