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18230968 = 2374367113
BaseRepresentation
bin100010110001…
…0111010111000
31021022020012001
41011202322320
514131342333
61450430344
7310650340
oct105427270
937266161
1018230968
11a322218
1261323b4
133a14172
1425c7d20
151901b7d
hex1162eb8

18230968 has 64 divisors (see below), whose sum is σ = 40930560. Its totient is φ = 7451136.

The previous prime is 18230959. The next prime is 18230969. The reversal of 18230968 is 86903281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230969) 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, 161280 + ... + 161392.

It is an arithmetic number, because the mean of its divisors is an integer number (639540).

Almost surely, 218230968 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 18230968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20465280).

18230968 is an abundant number, since it is smaller than the sum of its proper divisors (22699592).

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

18230968 is a wasteful number, since it uses less digits than its factorization.

18230968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18230968 is about 4269.7737644985. The cubic root of 18230968 is about 263.1903184695.

The spelling of 18230968 in words is "eighteen million, two hundred thirty thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 43 56 67 86 113 134 172 226 268 301 344 452 469 536 602 791 904 938 1204 1582 1876 2408 2881 3164 3752 4859 5762 6328 7571 9718 11524 15142 19436 20167 23048 30284 34013 38872 40334 52997 60568 68026 80668 105994 136052 161336 211988 272104 325553 423976 651106 1302212 2278871 2604424 4557742 9115484 18230968