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520132470 = 2351113263461
BaseRepresentation
bin11111000000001…
…001011101110110
31100020201110121120
4133000021131312
52031123214340
6123340124410
715614024124
oct3700113566
91306643546
10520132470
11247668250
12126236706
13839b38c0
144d116914
15309e34d0
hex1f009776

520132470 has 128 divisors (see below), whose sum is σ = 1475324928. Its totient is φ = 115699200.

The previous prime is 520132453. The next prime is 520132471. The reversal of 520132470 is 74231025.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520132470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520132471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1128040 + ... + 1128500.

It is an arithmetic number, because the mean of its divisors is an integer number (11525976).

Almost surely, 2520132470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520132470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737662464).

520132470 is an abundant number, since it is smaller than the sum of its proper divisors (955192458).

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

520132470 is a wasteful number, since it uses less digits than its factorization.

520132470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 520132470 is about 22806.4129139152. The cubic root of 520132470 is about 804.2134312459.

Adding to 520132470 its reverse (74231025), we get a palindrome (594363495).

The spelling of 520132470 in words is "five hundred twenty million, one hundred thirty-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 11 13 15 22 26 30 33 39 55 65 66 78 110 130 143 165 195 263 286 330 390 429 461 526 715 789 858 922 1315 1383 1430 1578 2145 2305 2630 2766 2893 3419 3945 4290 4610 5071 5786 5993 6838 6915 7890 8679 10142 10257 11986 13830 14465 15213 17095 17358 17979 20514 25355 28930 29965 30426 34190 35958 37609 43395 50710 51285 59930 65923 75218 76065 86790 89895 102570 112827 121243 131846 152130 179790 188045 197769 225654 242486 329615 363729 376090 395538 564135 606215 659230 727458 988845 1128270 1212430 1333673 1576159 1818645 1977690 2667346 3152318 3637290 4001019 4728477 6668365 7880795 8002038 9456954 13336730 15761590 17337749 20005095 23642385 34675498 40010190 47284770 52013247 86688745 104026494 173377490 260066235 520132470