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68204319 = 3194912437
BaseRepresentation
bin1000001000010…
…11011100011111
311202100010201220
410010023130133
5114430014234
610433504423
71455504261
oct404133437
9152303656
1068204319
1135554a07
121aa12113
13111903b1
1490b5b31
155ec3a49
hex410b71f

68204319 has 16 divisors (see below), whose sum is σ = 95959680. Its totient is φ = 42971040.

The previous prime is 68204291. The next prime is 68204329. The reversal of 68204319 is 91340286.

It is not a de Polignac number, because 68204319 - 211 = 68202271 is a prime.

It is a super-2 number, since 2×682043192 = 9303658260507522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68204319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68204329) 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 15 ways as a sum of consecutive naturals, for example, 26769 + ... + 29205.

It is an arithmetic number, because the mean of its divisors is an integer number (5997480).

Almost surely, 268204319 is an apocalyptic number.

68204319 is a deficient number, since it is larger than the sum of its proper divisors (27755361).

68204319 is a wasteful number, since it uses less digits than its factorization.

68204319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 68204319 is about 8258.5906182593. The cubic root of 68204319 is about 408.5739051998.

The spelling of 68204319 in words is "sixty-eight million, two hundred four thousand, three hundred nineteen".

Divisors: 1 3 19 57 491 1473 2437 7311 9329 27987 46303 138909 1196567 3589701 22734773 68204319