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68993814 = 23107107467
BaseRepresentation
bin1000001110011…
…00001100010110
311210211020201110
410013030030112
5120130300224
610502435450
71465303101
oct407141426
9153736643
1068993814
1135a4408a
121b132b86
13113a8856
14923d738
1560cc929
hex41cc316

68993814 has 16 divisors (see below), whose sum is σ = 139278528. Its totient is φ = 22782792.

The previous prime is 68993773. The next prime is 68993819. The reversal of 68993814 is 41839986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68993819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 53092 + ... + 54375.

It is an arithmetic number, because the mean of its divisors is an integer number (8704908).

Almost surely, 268993814 is an apocalyptic number.

68993814 is an abundant number, since it is smaller than the sum of its proper divisors (70284714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68993814 is a wasteful number, since it uses less digits than its factorization.

68993814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107579.

The product of its digits is 373248, while the sum is 48.

The square root of 68993814 is about 8306.2515011285. The cubic root of 68993814 is about 410.1443354605.

The spelling of 68993814 in words is "sixty-eight million, nine hundred ninety-three thousand, eight hundred fourteen".

Divisors: 1 2 3 6 107 214 321 642 107467 214934 322401 644802 11498969 22997938 34496907 68993814