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68829043 = 83982037
BaseRepresentation
bin1000001101000…
…11111101110011
311210111212200211
410012203331303
5120110012133
610455124551
71464015523
oct406437563
9153455624
1068829043
1135941308
121b073757
131134b85a
1491d9683
156098bcd
hex41a3f73

68829043 has 4 divisors (see below), whose sum is σ = 68911920. Its totient is φ = 68746168.

The previous prime is 68829017. The next prime is 68829049. The reversal of 68829043 is 34092886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68829043 - 217 = 68697971 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68828987 and 68829005.

It is not an unprimeable number, because it can be changed into a prime (68829049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40180 + ... + 41857.

It is an arithmetic number, because the mean of its divisors is an integer number (17227980).

Almost surely, 268829043 is an apocalyptic number.

68829043 is a deficient number, since it is larger than the sum of its proper divisors (82877).

68829043 is an equidigital number, since it uses as much as digits as its factorization.

68829043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82876.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 68829043 is about 8296.3270788946. The cubic root of 68829043 is about 409.8175730164.

The spelling of 68829043 in words is "sixty-eight million, eight hundred twenty-nine thousand, forty-three".

Divisors: 1 839 82037 68829043