Search a number
-
+
438473130 = 23534941879
BaseRepresentation
bin11010001000101…
…001000110101010
31010120001202001120
4122020221012222
51344222120010
6111302000110
713602650214
oct3210510652
91116052046
10438473130
11205563397
12102a16036
136cac2174
144233b5b4
1528762e70
hex1a2291aa

438473130 has 32 divisors (see below), whose sum is σ = 1055376000. Its totient is φ = 116588352.

The previous prime is 438473111. The next prime is 438473131. The reversal of 438473130 is 31374834.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 438473091 and 438473100.

It is not an unprimeable number, because it can be changed into a prime (438473131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10470 + ... + 31409.

It is an arithmetic number, because the mean of its divisors is an integer number (32980500).

Almost surely, 2438473130 is an apocalyptic number.

438473130 is an abundant number, since it is smaller than the sum of its proper divisors (616902870).

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

438473130 is a wasteful number, since it uses less digits than its factorization.

438473130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42238.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 438473130 is about 20939.7499985076. The cubic root of 438473130 is about 759.7096825118.

The spelling of 438473130 in words is "four hundred thirty-eight million, four hundred seventy-three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 349 698 1047 1745 2094 3490 5235 10470 41879 83758 125637 209395 251274 418790 628185 1256370 14615771 29231542 43847313 73078855 87694626 146157710 219236565 438473130