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487289 = 11311429
BaseRepresentation
bin1110110111101111001
3220202102202
41312331321
5111043124
614235545
74066445
oct1667571
9822382
10487289
11303120
121b5bb5
13140a4a
14c9825
15995ae
hex76f79

487289 has 8 divisors (see below), whose sum is σ = 549120. Its totient is φ = 428400.

The previous prime is 487283. The next prime is 487303. The reversal of 487289 is 982784.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-487289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (487283) 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, 374 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2487289 is an apocalyptic number.

It is an amenable number.

487289 is a deficient number, since it is larger than the sum of its proper divisors (61831).

487289 is a wasteful number, since it uses less digits than its factorization.

487289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its digits is 32256, while the sum is 38.

The square root of 487289 is about 698.0608855967. The cubic root of 487289 is about 78.6916894288.

It can be divided in two parts, 48 and 7289, that added together give a palindrome (7337).

The spelling of 487289 in words is "four hundred eighty-seven thousand, two hundred eighty-nine".

Divisors: 1 11 31 341 1429 15719 44299 487289