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201386 = 2100693
BaseRepresentation
bin110001001010101010
3101020020202
4301022222
522421021
64152202
71466063
oct611252
9336222
10201386
11128339
1298662
1370883
145356a
153ea0b
hex312aa

201386 has 4 divisors (see below), whose sum is σ = 302082. Its totient is φ = 100692.

The previous prime is 201359. The next prime is 201389. The reversal of 201386 is 683102.

201386 = 1242 + 1252 + ... + 1352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185761 + 15625 = 431^2 + 125^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (201389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50345 + ... + 50348.

2201386 is an apocalyptic number.

201386 is a deficient number, since it is larger than the sum of its proper divisors (100696).

201386 is a wasteful number, since it uses less digits than its factorization.

201386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100695.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 201386 is about 448.7605151971. The cubic root of 201386 is about 58.6151335226.

Adding to 201386 its reverse (683102), we get a palindrome (884488).

The spelling of 201386 in words is "two hundred one thousand, three hundred eighty-six".

Divisors: 1 2 100693 201386