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68549430 = 2352399347
BaseRepresentation
bin1000001010111…
…11101100110110
311202222200010210
410011133230312
5120022040210
610445130250
71461442365
oct405375466
9152880123
1068549430
1135770224
121ab59986
13112814c1
1491657dc
156040e20
hex415fb36

68549430 has 32 divisors (see below), whose sum is σ = 171673344. Its totient is φ = 17484896.

The previous prime is 68549381. The next prime is 68549431. The reversal of 68549430 is 3494586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68549431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48984 + ... + 50363.

It is an arithmetic number, because the mean of its divisors is an integer number (5364792).

Almost surely, 268549430 is an apocalyptic number.

68549430 is an abundant number, since it is smaller than the sum of its proper divisors (103123914).

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

68549430 is a wasteful number, since it uses less digits than its factorization.

68549430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99380.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68549430 is about 8279.4583156146. The cubic root of 68549430 is about 409.2618684338.

The spelling of 68549430 in words is "sixty-eight million, five hundred forty-nine thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 99347 198694 298041 496735 596082 993470 1490205 2284981 2980410 4569962 6854943 11424905 13709886 22849810 34274715 68549430