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68814280 = 2352836079
BaseRepresentation
bin1000001101000…
…00010111001000
311210111010110001
410012200113020
5120104024110
610454532344
71463624503
oct406402710
9153433401
1068814280
1135931207
121b0670b4
1311344c12
1491d413a
15609463a
hex41a05c8

68814280 has 32 divisors (see below), whose sum is σ = 155404800. Its totient is φ = 27423936.

The previous prime is 68814269. The next prime is 68814281. The reversal of 68814280 is 8241886.

It is not an unprimeable number, because it can be changed into a prime (68814281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8281 + ... + 14359.

It is an arithmetic number, because the mean of its divisors is an integer number (4856400).

Almost surely, 268814280 is an apocalyptic number.

It is an amenable number.

68814280 is an abundant number, since it is smaller than the sum of its proper divisors (86590520).

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

68814280 is a wasteful number, since it uses less digits than its factorization.

68814280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373 (or 6369 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 68814280 is about 8295.4373001066. The cubic root of 68814280 is about 409.7882706116.

The spelling of 68814280 in words is "sixty-eight million, eight hundred fourteen thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 283 566 1132 1415 2264 2830 5660 6079 11320 12158 24316 30395 48632 60790 121580 243160 1720357 3440714 6881428 8601785 13762856 17203570 34407140 68814280