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520304 = 24311049
BaseRepresentation
bin1111111000001110000
3222102201112
41333001300
5113122204
615052452
74264631
oct1770160
9872645
10520304
11325a04
12211128
13152a95
14d7888
15a426e
hex7f070

520304 has 20 divisors (see below), whose sum is σ = 1041600. Its totient is φ = 251520.

The previous prime is 520297. The next prime is 520307. The reversal of 520304 is 403025.

Adding to 520304 its reverse (403025), we get a palindrome (923329).

520304 is an admirable number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520307) by changing a digit.

520304 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (52080).

2520304 is an apocalyptic number.

It is an amenable number.

520304 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

520304 is a wasteful number, since it uses less digits than its factorization.

520304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 520304 is about 721.3210103692. The cubic root of 520304 is about 80.4301826399.

The spelling of 520304 in words is "five hundred twenty thousand, three hundred four".

Divisors: 1 2 4 8 16 31 62 124 248 496 1049 2098 4196 8392 16784 32519 65038 130076 260152 520304