Search a number
-
+
230805408 = 25337181359
BaseRepresentation
bin11011100000111…
…00111110100000
3121002022010111110
431300130332200
5433041233113
634522543320
75501546031
oct1560347640
9532263443
10230805408
11109313579
1265367b40
1338a81a62
1422920a88
15153e1bc3
hexdc1cfa0

230805408 has 96 divisors (see below), whose sum is σ = 627419520. Its totient is φ = 74234880.

The previous prime is 230805401. The next prime is 230805431. The reversal of 230805408 is 804508032.

230805408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2308054082 = 106542272724092928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230805401) 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, 642733 + ... + 643091.

It is an arithmetic number, because the mean of its divisors is an integer number (6535620).

Almost surely, 2230805408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230805408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313709760).

230805408 is an abundant number, since it is smaller than the sum of its proper divisors (396614112).

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

230805408 is a wasteful number, since it uses less digits than its factorization.

230805408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 230805408 is about 15192.2811980295. The cubic root of 230805408 is about 613.4069046381.

The spelling of 230805408 in words is "two hundred thirty million, eight hundred five thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 37 48 74 96 111 148 181 222 296 359 362 444 543 592 718 724 888 1077 1086 1184 1436 1448 1776 2154 2172 2872 2896 3552 4308 4344 5744 5792 6697 8616 8688 11488 13283 13394 17232 17376 20091 26566 26788 34464 39849 40182 53132 53576 64979 79698 80364 106264 107152 129958 159396 160728 194937 212528 214304 259916 318792 321456 389874 425056 519832 637584 642912 779748 1039664 1275168 1559496 2079328 2404223 3118992 4808446 6237984 7212669 9616892 14425338 19233784 28850676 38467568 57701352 76935136 115402704 230805408