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68975172 = 2233791237
BaseRepresentation
bin1000001110001…
…11101001000100
311210210022011000
410013013221010
5120124201142
610502213300
71465164540
oct407075104
9153708130
1068975172
1135a31082
121b124230
13113a0216
149236a20
1560c714c
hex41c7a44

68975172 has 48 divisors (see below), whose sum is σ = 204373120. Its totient is φ = 19706976.

The previous prime is 68975129. The next prime is 68975209. The reversal of 68975172 is 27157986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44863 + ... + 46374.

Almost surely, 268975172 is an apocalyptic number.

It is an amenable number.

68975172 is an abundant number, since it is smaller than the sum of its proper divisors (135397948).

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

68975172 is a wasteful number, since it uses less digits than its factorization.

68975172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91257 (or 91249 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 68975172 is about 8305.1292584764. The cubic root of 68975172 is about 410.1073920545.

The spelling of 68975172 in words is "sixty-eight million, nine hundred seventy-five thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 252 378 756 91237 182474 273711 364948 547422 638659 821133 1094844 1277318 1642266 1915977 2463399 2554636 3284532 3831954 4926798 5747931 7663908 9853596 11495862 17243793 22991724 34487586 68975172