Search a number
-
+
470131530 = 235111997159
BaseRepresentation
bin11100000001011…
…010001101001010
31012202122011012220
4130001122031022
51430323202110
6114352314510
714436023601
oct3401321512
91182564186
10470131530
11221416860
12111542a36
1376527c4b
144661ca38
152b418370
hex1c05a34a

470131530 has 64 divisors (see below), whose sum is σ = 1237248000. Its totient is φ = 113382720.

The previous prime is 470131489. The next prime is 470131537. The reversal of 470131530 is 35131074.

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 470131530.

It is not an unprimeable number, because it can be changed into a prime (470131537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62091 + ... + 69249.

It is an arithmetic number, because the mean of its divisors is an integer number (19332000).

Almost surely, 2470131530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 470131530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618624000).

470131530 is an abundant number, since it is smaller than the sum of its proper divisors (767116470).

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

470131530 is a wasteful number, since it uses less digits than its factorization.

470131530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 470131530 is about 21682.5166897203. The cubic root of 470131530 is about 777.5705308514.

The spelling of 470131530 in words is "four hundred seventy million, one hundred thirty-one thousand, five hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 199 330 398 597 995 1194 1990 2189 2985 4378 5970 6567 7159 10945 13134 14318 21477 21890 32835 35795 42954 65670 71590 78749 107385 157498 214770 236247 393745 472494 787490 1181235 1424641 2362470 2849282 4273923 7123205 8547846 14246410 15671051 21369615 31342102 42739230 47013153 78355255 94026306 156710510 235065765 470131530