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228204193 = 7191715821
BaseRepresentation
bin11011001101000…
…01111010100001
3120220101222022011
431212201322201
5431410013233
634351112521
75440463230
oct1546417241
9526358264
10228204193
111078a7208
1264512741
1338380a89
1422444b17
151507b0cd
hexd9a1ea1

228204193 has 8 divisors (see below), whose sum is σ = 274531520. Its totient is φ = 185308560.

The previous prime is 228204187. The next prime is 228204199. The reversal of 228204193 is 391402822.

228204193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228204187) and next prime (228204199).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228204193 - 217 = 228073121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228204199) 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, 857778 + ... + 858043.

It is an arithmetic number, because the mean of its divisors is an integer number (34316440).

Almost surely, 2228204193 is an apocalyptic number.

It is an amenable number.

228204193 is a deficient number, since it is larger than the sum of its proper divisors (46327327).

228204193 is a wasteful number, since it uses less digits than its factorization.

228204193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715847.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 228204193 is about 15106.4288632357. The cubic root of 228204193 is about 611.0937940572.

The spelling of 228204193 in words is "two hundred twenty-eight million, two hundred four thousand, one hundred ninety-three".

Divisors: 1 7 19 133 1715821 12010747 32600599 228204193