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68761228 = 22197112743
BaseRepresentation
bin1000001100100…
…11011010001100
311210101102200011
410012103122030
5120100324403
610453443004
71463314024
oct406233214
9153342604
1068761228
11358a5368
121b040464
1311326a23
1491bca84
156083a6d
hex419368c

68761228 has 24 divisors (see below), whose sum is σ = 128459520. Its totient is φ = 32109840.

The previous prime is 68761181. The next prime is 68761241. The reversal of 68761228 is 82216786.

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 7 ways as a sum of consecutive naturals, for example, 976 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (5352480).

Almost surely, 268761228 is an apocalyptic number.

It is an amenable number.

68761228 is a deficient number, since it is larger than the sum of its proper divisors (59698292).

68761228 is a wasteful number, since it uses less digits than its factorization.

68761228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12837 (or 12835 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 68761228 is about 8292.2390221218. The cubic root of 68761228 is about 409.6829355148.

The spelling of 68761228 in words is "sixty-eight million, seven hundred sixty-one thousand, two hundred twenty-eight".

Divisors: 1 2 4 19 38 71 76 142 284 1349 2698 5396 12743 25486 50972 242117 484234 904753 968468 1809506 3619012 17190307 34380614 68761228