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68151474 = 23243191461
BaseRepresentation
bin1000000111111…
…10100010110010
311202020110020200
410003332202302
5114421321344
610432420030
71455164226
oct403764262
9152213220
1068151474
1135519236
121a9a7616
1311172321
1490a0786
155eb3069
hex40fe8b2

68151474 has 48 divisors (see below), whose sum is σ = 152216064. Its totient is φ = 22024800.

The previous prime is 68151469. The next prime is 68151491. The reversal of 68151474 is 47415186.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 147604 + ... + 148064.

It is an arithmetic number, because the mean of its divisors is an integer number (3171168).

Almost surely, 268151474 is an apocalyptic number.

68151474 is an abundant number, since it is smaller than the sum of its proper divisors (84064590).

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

68151474 is a wasteful number, since it uses less digits than its factorization.

68151474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 700 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 68151474 is about 8255.3906025094. The cubic root of 68151474 is about 408.4683563283.

The spelling of 68151474 in words is "sixty-eight million, one hundred fifty-one thousand, four hundred seventy-four".

Divisors: 1 2 3 6 9 18 43 86 129 191 258 382 387 461 573 774 922 1146 1383 1719 2766 3438 4149 8213 8298 16426 19823 24639 39646 49278 59469 73917 88051 118938 147834 176102 178407 264153 356814 528306 792459 1584918 3786193 7572386 11358579 22717158 34075737 68151474