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228141530 = 251712710567
BaseRepresentation
bin11011001100100…
…10100111011010
3120220021210100022
431212102213122
5431401012110
634345510442
75440112441
oct1546224732
9526253308
10228141530
11107864121
12644a2422
133835b3b6
1422429d58
1515067755
hexd9929da

228141530 has 32 divisors (see below), whose sum is σ = 438276096. Its totient is φ = 85204224.

The previous prime is 228141523. The next prime is 228141533. The reversal of 228141530 is 35141822.

It is a self number, because there is not a number n which added to its sum of digits gives 228141530.

It is not an unprimeable number, because it can be changed into a prime (228141533) 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, 16307 + ... + 26873.

It is an arithmetic number, because the mean of its divisors is an integer number (13696128).

Almost surely, 2228141530 is an apocalyptic number.

228141530 is a deficient number, since it is larger than the sum of its proper divisors (210134566).

228141530 is a wasteful number, since it uses less digits than its factorization.

228141530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 228141530 is about 15104.3546700943. The cubic root of 228141530 is about 611.0378551552.

The spelling of 228141530 in words is "two hundred twenty-eight million, one hundred forty-one thousand, five hundred thirty".

Divisors: 1 2 5 10 17 34 85 127 170 254 635 1270 2159 4318 10567 10795 21134 21590 52835 105670 179639 359278 898195 1342009 1796390 2684018 6710045 13420090 22814153 45628306 114070765 228141530