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67228245 = 3357210163
BaseRepresentation
bin1000000000111…
…01001001010101
311200111112211000
410000131021111
5114202300440
610400533513
71444300500
oct400351125
9150445730
1067228245
1134a48637
121a621299
1310c0b036
148d00137
155d7e730
hex401d255

67228245 has 48 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 30729888.

The previous prime is 67228237. The next prime is 67228247. The reversal of 67228245 is 54282276.

It is not a de Polignac number, because 67228245 - 23 = 67228237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67228247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1534 + ... + 11696.

It is an arithmetic number, because the mean of its divisors is an integer number (2896740).

Almost surely, 267228245 is an apocalyptic number.

It is an amenable number.

67228245 is an abundant number, since it is smaller than the sum of its proper divisors (71815275).

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

67228245 is a wasteful number, since it uses less digits than its factorization.

67228245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191 (or 10178 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 67228245 is about 8199.2832003779. The cubic root of 67228245 is about 406.6154952932.

The spelling of 67228245 in words is "sixty-seven million, two hundred twenty-eight thousand, two hundred forty-five".

Divisors: 1 3 5 7 9 15 21 27 35 45 49 63 105 135 147 189 245 315 441 735 945 1323 2205 6615 10163 30489 50815 71141 91467 152445 213423 274401 355705 457335 497987 640269 1067115 1372005 1493961 1920807 2489935 3201345 4481883 7469805 9604035 13445649 22409415 67228245