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68578332 = 2237180491
BaseRepresentation
bin1000001011001…
…10110000011100
311210001010210020
410011212300130
5120024001312
610445512140
71461622554
oct405466034
9153033706
1068578332
113578aa09
121ab72650
13112916c4
149172164
15604978c
hex4166c1c

68578332 has 24 divisors (see below), whose sum is σ = 162271872. Its totient is φ = 22537200.

The previous prime is 68578313. The next prime is 68578339. The reversal of 68578332 is 23387586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68578339) by changing a digit.

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, 39394 + ... + 41097.

It is an arithmetic number, because the mean of its divisors is an integer number (6761328).

Almost surely, 268578332 is an apocalyptic number.

It is an amenable number.

68578332 is an abundant number, since it is smaller than the sum of its proper divisors (93693540).

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

68578332 is a wasteful number, since it uses less digits than its factorization.

68578332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80569 (or 80567 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 68578332 is about 8281.2035357187. The cubic root of 68578332 is about 409.3193783918.

The spelling of 68578332 in words is "sixty-eight million, five hundred seventy-eight thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 71 142 213 284 426 852 80491 160982 241473 321964 482946 965892 5714861 11429722 17144583 22859444 34289166 68578332