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228708071 = 1639671451
BaseRepresentation
bin11011010000111…
…00111011100111
3120221100120111022
431220130323213
5432022124241
634410001355
75444662244
oct1550347347
9527316438
10228708071
11108110839
126471625b
13384c9227
14225365cb
151512a54b
hexda1cee7

228708071 has 8 divisors (see below), whose sum is σ = 230507904. Its totient is φ = 226913400.

The previous prime is 228708037. The next prime is 228708079. The reversal of 228708071 is 170807822.

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 228708071 - 218 = 228445927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228708079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156896 + ... + 158346.

It is an arithmetic number, because the mean of its divisors is an integer number (28813488).

Almost surely, 2228708071 is an apocalyptic number.

228708071 is a deficient number, since it is larger than the sum of its proper divisors (1799833).

228708071 is a wasteful number, since it uses less digits than its factorization.

228708071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 228708071 is about 15123.0972687476. The cubic root of 228708071 is about 611.5432312684.

The spelling of 228708071 in words is "two hundred twenty-eight million, seven hundred eight thousand, seventy-one".

Divisors: 1 163 967 1451 157621 236513 1403117 228708071