Search a number
-
+
487881 = 32151359
BaseRepresentation
bin1110111000111001001
3220210020200
41313013021
5111103011
614242413
74101252
oct1670711
9823220
10487881
11303609
121b6409
131410b4
14c9b29
1599856
hex771c9

487881 has 12 divisors (see below), whose sum is σ = 711360. Its totient is φ = 322200.

The previous prime is 487873. The next prime is 487889. The reversal of 487881 is 188784.

It is an interprime number because it is at equal distance from previous prime (487873) and next prime (487889).

It is not a de Polignac number, because 487881 - 23 = 487873 is a prime.

It is a super-2 number, since 2×4878812 = 476055740322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (487889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (59280).

2487881 is an apocalyptic number.

It is an amenable number.

487881 is a deficient number, since it is larger than the sum of its proper divisors (223479).

487881 is a wasteful number, since it uses less digits than its factorization.

487881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 513 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 487881 is about 698.4847886676. The cubic root of 487881 is about 78.7235436450.

The spelling of 487881 in words is "four hundred eighty-seven thousand, eight hundred eighty-one".

Divisors: 1 3 9 151 359 453 1077 1359 3231 54209 162627 487881