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68804443 = 295940213
BaseRepresentation
bin1000001100111…
…01111101011011
311210110121221201
410012131331123
5120103220233
610454415031
71463554021
oct406357533
9153417851
1068804443
1135924884
121b061477
13113405b6
1491d0711
15609177d
hex419df5b

68804443 has 8 divisors (see below), whose sum is σ = 72385200. Its totient is φ = 65304288.

The previous prime is 68804399. The next prime is 68804459. The reversal of 68804443 is 34440886.

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

It is a de Polignac number, because none of the positive numbers 2k-68804443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68814443) 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, 18396 + ... + 21817.

It is an arithmetic number, because the mean of its divisors is an integer number (9048150).

Almost surely, 268804443 is an apocalyptic number.

68804443 is a deficient number, since it is larger than the sum of its proper divisors (3580757).

68804443 is a wasteful number, since it uses less digits than its factorization.

68804443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40301.

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 68804443 is about 8294.8443626146. The cubic root of 68804443 is about 409.7687432726.

The spelling of 68804443 in words is "sixty-eight million, eight hundred four thousand, four hundred forty-three".

Divisors: 1 29 59 1711 40213 1166177 2372567 68804443