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68820294 = 2311470049
BaseRepresentation
bin1000001101000…
…01110101000110
311210111102200210
410012201311012
5120104222134
610455020250
71463651154
oct406416506
9153442623
1068820294
1135935784
121b06a686
131134788a
1491d63d4
1560962e9
hex41a1d46

68820294 has 8 divisors (see below), whose sum is σ = 137640600. Its totient is φ = 22940096.

The previous prime is 68820293. The next prime is 68820317. The reversal of 68820294 is 49202886.

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

68820294 is an admirable number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68820293) 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 3 ways as a sum of consecutive naturals, for example, 5735019 + ... + 5735030.

It is an arithmetic number, because the mean of its divisors is an integer number (17205075).

Almost surely, 268820294 is an apocalyptic number.

68820294 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68820294 is a wasteful number, since it uses less digits than its factorization.

68820294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470054.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 68820294 is about 8295.7997806119. The cubic root of 68820294 is about 409.8002080315.

The spelling of 68820294 in words is "sixty-eight million, eight hundred twenty thousand, two hundred ninety-four".

Divisors: 1 2 3 6 11470049 22940098 34410147 68820294