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68687038 = 27171911511
BaseRepresentation
bin1000001100000…
…01010010111110
311210020122220101
410012001102332
5120040441123
610452111314
71462554520
oct406012276
9153218811
1068687038
1135854652
121b00553a
13112cc024
14919da10
15606baad
hex41814be

68687038 has 32 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 27542400.

The previous prime is 68687027. The next prime is 68687081. The reversal of 68687038 is 83078686.

It is a congruent number.

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, 44703 + ... + 46213.

It is an arithmetic number, because the mean of its divisors is an integer number (3919104).

Almost surely, 268687038 is an apocalyptic number.

68687038 is a deficient number, since it is larger than the sum of its proper divisors (56724290).

68687038 is a wasteful number, since it uses less digits than its factorization.

68687038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 68687038 is about 8287.7643547582. The cubic root of 68687038 is about 409.5355398784.

The spelling of 68687038 in words is "sixty-eight million, six hundred eighty-seven thousand, thirty-eight".

Divisors: 1 2 7 14 17 34 119 191 238 382 1337 1511 2674 3022 3247 6494 10577 21154 22729 25687 45458 51374 179809 288601 359618 577202 2020207 4040414 4906217 9812434 34343519 68687038