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68621382 = 23213727827
BaseRepresentation
bin1000001011100…
…01010001000110
311210010022211200
410011301101012
5120031341012
610450443330
71462162224
oct405612106
9153108750
1068621382
113580a295
121ab93546
13112a818b
149183b14
1560573dc
hex4171446

68621382 has 24 divisors (see below), whose sum is σ = 149770296. Its totient is φ = 22706016.

The previous prime is 68621327. The next prime is 68621393. The reversal of 68621382 is 28312686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11448 + ... + 16379.

It is an arithmetic number, because the mean of its divisors is an integer number (6240429).

Almost surely, 268621382 is an apocalyptic number.

68621382 is an abundant number, since it is smaller than the sum of its proper divisors (81148914).

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

68621382 is a wasteful number, since it uses less digits than its factorization.

68621382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27972 (or 27969 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 68621382 is about 8283.8023877927. The cubic root of 68621382 is about 409.4050104604.

The spelling of 68621382 in words is "sixty-eight million, six hundred twenty-one thousand, three hundred eighty-two".

Divisors: 1 2 3 6 9 18 137 274 411 822 1233 2466 27827 55654 83481 166962 250443 500886 3812299 7624598 11436897 22873794 34310691 68621382