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228161058 = 23231653341
BaseRepresentation
bin11011001100101…
…11011000100010
3120220022210010120
431212113120202
5431402123213
634350141110
75440223406
oct1546273042
9526283116
10228161058
11107877864
12644b1796
1338367258
1422433106
151506d423
hexd997622

228161058 has 16 divisors (see below), whose sum is σ = 476162496. Its totient is φ = 72746960.

The previous prime is 228161051. The next prime is 228161071. The reversal of 228161058 is 850161822.

228161058 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (228161051) 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, 826533 + ... + 826808.

It is an arithmetic number, because the mean of its divisors is an integer number (29760156).

Almost surely, 2228161058 is an apocalyptic number.

228161058 is an abundant number, since it is smaller than the sum of its proper divisors (248001438).

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

228161058 is a wasteful number, since it uses less digits than its factorization.

228161058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653369.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 228161058 is about 15105.0010923535. The cubic root of 228161058 is about 611.0552887878.

Subtracting from 228161058 its sum of digits (33), we obtain a square (228161025 = 151052).

The spelling of 228161058 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, fifty-eight".

Divisors: 1 2 3 6 23 46 69 138 1653341 3306682 4960023 9920046 38026843 76053686 114080529 228161058