Search a number
-
+
487240 = 23513937
BaseRepresentation
bin1110110111101001000
3220202100221
41312331020
5111042430
614235424
74066345
oct1667510
9822327
10487240
11303086
121b5b74
13140a10
14c97cc
159957a
hex76f48

487240 has 32 divisors (see below), whose sum is σ = 1181880. Its totient is φ = 179712.

The previous prime is 487219. The next prime is 487247. The reversal of 487240 is 42784.

It can be written as a sum of positive squares in 4 ways, for example, as 171396 + 315844 = 414^2 + 562^2 .

It is not an unprimeable number, because it can be changed into a prime (487247) 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 7 ways as a sum of consecutive naturals, for example, 52 + ... + 988.

2487240 is an apocalyptic number.

487240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 487240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590940).

487240 is an abundant number, since it is smaller than the sum of its proper divisors (694640).

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

487240 is a wasteful number, since it uses less digits than its factorization.

487240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 487240 is about 698.0257874893. The cubic root of 487240 is about 78.6890516908.

It can be divided in two parts, 487 and 240, that added together give a palindrome (727).

The spelling of 487240 in words is "four hundred eighty-seven thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 937 1874 3748 4685 7496 9370 12181 18740 24362 37480 48724 60905 97448 121810 243620 487240