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228316584 = 23323439619
BaseRepresentation
bin11011001101111…
…01010110101000
3120220121200110210
431212331112220
5431422112314
634353341120
75441442006
oct1546752650
9526550423
10228316584
111079736a1
12645677a0
13383bcc92
1422473a76
151509e559
hexd9bd5a8

228316584 has 64 divisors (see below), whose sum is σ = 609523200. Its totient is φ = 71096256.

The previous prime is 228316573. The next prime is 228316589. The reversal of 228316584 is 485613822.

228316584 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228316589) 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, 18927 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (9523800).

Almost surely, 2228316584 is an apocalyptic number.

228316584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228316584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304761600).

228316584 is an abundant number, since it is smaller than the sum of its proper divisors (381206616).

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

228316584 is a wasteful number, since it uses less digits than its factorization.

228316584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694 (or 9690 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 228316584 is about 15110.1483778287. The cubic root of 228316584 is about 611.1940992116.

The spelling of 228316584 in words is "two hundred twenty-eight million, three hundred sixteen thousand, five hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 23 24 43 46 69 86 92 129 138 172 184 258 276 344 516 552 989 1032 1978 2967 3956 5934 7912 9619 11868 19238 23736 28857 38476 57714 76952 115428 221237 230856 413617 442474 663711 827234 884948 1240851 1327422 1654468 1769896 2481702 2654844 3308936 4963404 5309688 9513191 9926808 19026382 28539573 38052764 57079146 76105528 114158292 228316584