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173142008 = 23131797931
BaseRepresentation
bin10100101000111…
…10111111111000
3110001210112011222
422110132333320
5323311021013
625103011212
74201453124
oct1224367770
9401715158
10173142008
1189809176
1249b99b08
1329b424c0
1418dd0584
1510301508
hexa51eff8

173142008 has 32 divisors (see below), whose sum is σ = 370182960. Its totient is φ = 75210240.

The previous prime is 173142001. The next prime is 173142019. The reversal of 173142008 is 800241371.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173142001) 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, 47198 + ... + 50733.

Almost surely, 2173142008 is an apocalyptic number.

It is an amenable number.

173142008 is an abundant number, since it is smaller than the sum of its proper divisors (197040952).

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

173142008 is a wasteful number, since it uses less digits than its factorization.

173142008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97967 (or 97963 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 173142008 is about 13158.3436647627. The cubic root of 173142008 is about 557.3578855790.

Adding to 173142008 its reverse (800241371), we get a palindrome (973383379).

The spelling of 173142008 in words is "one hundred seventy-three million, one hundred forty-two thousand, eight".

Divisors: 1 2 4 8 13 17 26 34 52 68 104 136 221 442 884 1768 97931 195862 391724 783448 1273103 1664827 2546206 3329654 5092412 6659308 10184824 13318616 21642751 43285502 86571004 173142008