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68405374 = 2291179403
BaseRepresentation
bin1000001001111…
…00100001111110
311202201100112101
410010330201332
5120002432444
610442055314
71460302402
oct404744176
9152640471
1068405374
1135681a74
121aaaa53a
1311230a6b
149129102
1560133d4
hex413c87e

68405374 has 8 divisors (see below), whose sum is σ = 106146360. Its totient is φ = 33023256.

The previous prime is 68405329. The next prime is 68405401. The reversal of 68405374 is 47350486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 589644 + ... + 589759.

It is an arithmetic number, because the mean of its divisors is an integer number (13268295).

Almost surely, 268405374 is an apocalyptic number.

68405374 is a deficient number, since it is larger than the sum of its proper divisors (37740986).

68405374 is a wasteful number, since it uses less digits than its factorization.

68405374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179434.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 68405374 is about 8270.7541373202. The cubic root of 68405374 is about 408.9749806851.

The spelling of 68405374 in words is "sixty-eight million, four hundred five thousand, three hundred seventy-four".

Divisors: 1 2 29 58 1179403 2358806 34202687 68405374