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163208061 = 3318793217
BaseRepresentation
bin10011011101001…
…01101101111101
3102101002211101000
421232211231331
5313240124221
624110040513
74021150152
oct1156455575
9371084330
10163208061
11841436a5
12467a9139
1327a74a23
1417966229
15e4dce26
hex9ba5b7d

163208061 has 16 divisors (see below), whose sum is σ = 241993600. Its totient is φ = 108713664.

The previous prime is 163208051. The next prime is 163208077. The reversal of 163208061 is 160802361.

It is not a de Polignac number, because 163208061 - 26 = 163207997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163208011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49125 + ... + 52341.

It is an arithmetic number, because the mean of its divisors is an integer number (15124600).

Almost surely, 2163208061 is an apocalyptic number.

It is an amenable number.

163208061 is a deficient number, since it is larger than the sum of its proper divisors (78785539).

163208061 is a wasteful number, since it uses less digits than its factorization.

163208061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105 (or 5099 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 163208061 is about 12775.2910338669. The cubic root of 163208061 is about 546.4878805509.

The spelling of 163208061 in words is "one hundred sixty-three million, two hundred eight thousand, sixty-one".

Divisors: 1 3 9 27 1879 3217 5637 9651 16911 28953 50733 86859 6044743 18134229 54402687 163208061