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68827970 = 256882797
BaseRepresentation
bin1000001101000…
…11101101000010
311210111211020002
410012203231002
5120104443340
610455120002
71464012431
oct406435502
9153454202
1068827970
1135940522
121b073002
131134b213
1491d9118
156098715
hex41a3b42

68827970 has 8 divisors (see below), whose sum is σ = 123890364. Its totient is φ = 27531184.

The previous prime is 68827963. The next prime is 68827981. The reversal of 68827970 is 7972886.

It can be written as a sum of positive squares in 2 ways, for example, as 68574961 + 253009 = 8281^2 + 503^2 .

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

It is an unprimeable number.

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, 3441389 + ... + 3441408.

Almost surely, 268827970 is an apocalyptic number.

68827970 is a deficient number, since it is larger than the sum of its proper divisors (55062394).

68827970 is a wasteful number, since it uses less digits than its factorization.

68827970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882804.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 68827970 is about 8296.2624114718. The cubic root of 68827970 is about 409.8154434089.

The spelling of 68827970 in words is "sixty-eight million, eight hundred twenty-seven thousand, nine hundred seventy".

Divisors: 1 2 5 10 6882797 13765594 34413985 68827970