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487812 = 223135359
BaseRepresentation
bin1110111000110000100
3220210011010
41313012010
5111102222
614242220
74101123
oct1670604
9823133
10487812
11303556
121b6370
13141060
14c9aba
159980c
hex77184

487812 has 48 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 144768.

The previous prime is 487811. The next prime is 487819. The reversal of 487812 is 218784.

It is a self number, because there is not a number n which added to its sum of digits gives 487812.

It is not an unprimeable number, because it can be changed into a prime (487811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8239 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2487812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 487812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635040).

487812 is an abundant number, since it is smaller than the sum of its proper divisors (782268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

487812 is a wasteful number, since it uses less digits than its factorization.

487812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 487812 is about 698.4353942921. The cubic root of 487812 is about 78.7198322341.

The spelling of 487812 in words is "four hundred eighty-seven thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 12 13 26 39 52 53 59 78 106 118 156 159 177 212 236 318 354 636 689 708 767 1378 1534 2067 2301 2756 3068 3127 4134 4602 6254 8268 9204 9381 12508 18762 37524 40651 81302 121953 162604 243906 487812