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68290574 = 21183149251
BaseRepresentation
bin1000001001000…
…00100000001110
311202111112001112
410010200200032
5114440244244
610435412022
71456313612
oct404404016
9152445045
1068290574
11356037a0
121aa54012
13111c0731
1490d9342
155ede39e
hex412080e

68290574 has 32 divisors (see below), whose sum is σ = 114307200. Its totient is φ = 30340000.

The previous prime is 68290559. The next prime is 68290583. The reversal of 68290574 is 47509286.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271949 + ... + 272199.

It is an arithmetic number, because the mean of its divisors is an integer number (3572100).

Almost surely, 268290574 is an apocalyptic number.

68290574 is a deficient number, since it is larger than the sum of its proper divisors (46016626).

68290574 is a wasteful number, since it uses less digits than its factorization.

68290574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 68290574 is about 8263.8111062633. The cubic root of 68290574 is about 408.7460677891.

The spelling of 68290574 in words is "sixty-eight million, two hundred ninety thousand, five hundred seventy-four".

Divisors: 1 2 11 22 83 149 166 251 298 502 913 1639 1826 2761 3278 5522 12367 20833 24734 37399 41666 74798 136037 229163 272074 411389 458326 822778 3104117 6208234 34145287 68290574