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218674068 = 22389204751
BaseRepresentation
bin11010000100010…
…11001110010100
3120020110210102120
431002023032110
5421440032233
633410535540
75263461504
oct1502131624
9506423376
10218674068
11102488078
12612975b0
13363c5052
1421083a04
15142e74b3
hexd08b394

218674068 has 24 divisors (see below), whose sum is σ = 515975040. Its totient is φ = 72072000.

The previous prime is 218674063. The next prime is 218674109. The reversal of 218674068 is 860476812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218674063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101308 + ... + 103443.

It is an arithmetic number, because the mean of its divisors is an integer number (21498960).

Almost surely, 2218674068 is an apocalyptic number.

It is an amenable number.

218674068 is an abundant number, since it is smaller than the sum of its proper divisors (297300972).

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

218674068 is a wasteful number, since it uses less digits than its factorization.

218674068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204847 (or 204845 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 218674068 is about 14787.6322648354. The cubic root of 218674068 is about 602.4658410528.

The spelling of 218674068 in words is "two hundred eighteen million, six hundred seventy-four thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 89 178 267 356 534 1068 204751 409502 614253 819004 1228506 2457012 18222839 36445678 54668517 72891356 109337034 218674068