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284705113 = 71131311813
BaseRepresentation
bin10000111110000…
…100000101011001
3201211201111222211
4100332010011121
51040341030423
644130115121
710024645030
oct2076040531
9654644884
10284705113
11136788190
127b41baa1
1346ca4184
1429b51717
1519edc10d
hex10f84159

284705113 has 16 divisors (see below), whose sum is σ = 356121216. Its totient is φ = 221120640.

The previous prime is 284705111. The next prime is 284705123. The reversal of 284705113 is 311507482.

It is a cyclic number.

It is not a de Polignac number, because 284705113 - 21 = 284705111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (284705111) 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, 18195 + ... + 30007.

It is an arithmetic number, because the mean of its divisors is an integer number (22257576).

Almost surely, 2284705113 is an apocalyptic number.

It is an amenable number.

284705113 is a deficient number, since it is larger than the sum of its proper divisors (71416103).

284705113 is a wasteful number, since it uses less digits than its factorization.

284705113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 284705113 is about 16873.2069565925. The cubic root of 284705113 is about 657.8573867994.

The spelling of 284705113 in words is "two hundred eighty-four million, seven hundred five thousand, one hundred thirteen".

Divisors: 1 7 11 77 313 2191 3443 11813 24101 82691 129943 909601 3697469 25882283 40672159 284705113