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68145414 = 23131181479
BaseRepresentation
bin1000000111111…
…01000100000110
311202020010221020
410003331010012
5114421123124
610432332010
71455140451
oct403750406
9152203836
1068145414
1135514727
121a9a4006
131116c63c
14909c498
155eb1379
hex40fd106

68145414 has 32 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 22370400.

The previous prime is 68145377. The next prime is 68145433. The reversal of 68145414 is 41454186.

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, 142027 + ... + 142505.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 268145414 is an apocalyptic number.

68145414 is an abundant number, since it is smaller than the sum of its proper divisors (70232826).

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

68145414 is a wasteful number, since it uses less digits than its factorization.

68145414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its digits is 15360, while the sum is 33.

The square root of 68145414 is about 8255.0235614443. The cubic root of 68145414 is about 408.4562490254.

The spelling of 68145414 in words is "sixty-eight million, one hundred forty-five thousand, four hundred fourteen".

Divisors: 1 2 3 6 131 181 262 362 393 479 543 786 958 1086 1437 2874 23711 47422 62749 71133 86699 125498 142266 173398 188247 260097 376494 520194 11357569 22715138 34072707 68145414