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228745367 = 638935803
BaseRepresentation
bin11011010001001…
…10000010010111
3120221102110122122
431220212002113
5432024322432
634410450155
75445206054
oct1550460227
9527373578
10228745367
11108136864
126473395b
13385101b6
142254602b
1515136612
hexda26097

228745367 has 4 divisors (see below), whose sum is σ = 228787560. Its totient is φ = 228703176.

The previous prime is 228745339. The next prime is 228745399. The reversal of 228745367 is 763547822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228745367 - 224 = 211968151 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 (228745067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11513 + ... + 24290.

It is an arithmetic number, because the mean of its divisors is an integer number (57196890).

Almost surely, 2228745367 is an apocalyptic number.

228745367 is a deficient number, since it is larger than the sum of its proper divisors (42193).

228745367 is an equidigital number, since it uses as much as digits as its factorization.

228745367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42192.

The product of its digits is 564480, while the sum is 44.

The square root of 228745367 is about 15124.3302992232. The cubic root of 228745367 is about 611.5764714255.

The spelling of 228745367 in words is "two hundred twenty-eight million, seven hundred forty-five thousand, three hundred sixty-seven".

Divisors: 1 6389 35803 228745367