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68022443 = 626310861
BaseRepresentation
bin1000000110111…
…11000010101011
311201222220020202
410003133002223
5114403204233
610425542415
71454116106
oct403370253
9151886222
1068022443
11354402a5
121a944a0b
1311128688
14906973d
155e89be8
hex40df0ab

68022443 has 4 divisors (see below), whose sum is σ = 68039568. Its totient is φ = 68005320.

The previous prime is 68022419. The next prime is 68022467. The reversal of 68022443 is 34422086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34422086 = 217211043.

It is an interprime number because it is at equal distance from previous prime (68022419) and next prime (68022467).

It is a cyclic number.

It is not a de Polignac number, because 68022443 - 216 = 67956907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68022743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833 + ... + 11693.

It is an arithmetic number, because the mean of its divisors is an integer number (17009892).

Almost surely, 268022443 is an apocalyptic number.

68022443 is a deficient number, since it is larger than the sum of its proper divisors (17125).

68022443 is a wasteful number, since it uses less digits than its factorization.

68022443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 68022443 is about 8247.5719457305. The cubic root of 68022443 is about 408.2104094611.

The spelling of 68022443 in words is "sixty-eight million, twenty-two thousand, four hundred forty-three".

Divisors: 1 6263 10861 68022443