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1888201 = 71914197
BaseRepresentation
bin111001100111111001001
310112221010101
413030333021
5440410301
6104245401
722022650
oct7147711
93487111
101888201
11107a6a7
12770861
135115a3
14372197
15274701
hex1ccfc9

1888201 has 8 divisors (see below), whose sum is σ = 2271680. Its totient is φ = 1533168.

The previous prime is 1888199. The next prime is 1888213. The reversal of 1888201 is 1028881.

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

It is not a de Polignac number, because 1888201 - 21 = 1888199 is a prime.

It is an Ulam number.

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 1888201.

It is not an unprimeable number, because it can be changed into a prime (1888301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6966 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (283960).

21888201 is an apocalyptic number.

It is an amenable number.

1888201 is a deficient number, since it is larger than the sum of its proper divisors (383479).

1888201 is a wasteful number, since it uses less digits than its factorization.

1888201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 1888201 is about 1374.1182627416. The cubic root of 1888201 is about 123.5993180106.

The spelling of 1888201 in words is "one million, eight hundred eighty-eight thousand, two hundred one".

Divisors: 1 7 19 133 14197 99379 269743 1888201