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68099078 = 2191819901
BaseRepresentation
bin1000000111100…
…01110000000110
311202010210101002
410003301300012
5114413132303
610431333302
71454555405
oct403616006
9152123332
1068099078
1135492933
121a981232
1311154518
14908963c
155ea2788
hex40f1c06

68099078 has 16 divisors (see below), whose sum is σ = 108129840. Its totient is φ = 32076000.

The previous prime is 68099063. The next prime is 68099081. The reversal of 68099078 is 87099086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928 + ... + 11828.

It is an arithmetic number, because the mean of its divisors is an integer number (6758115).

Almost surely, 268099078 is an apocalyptic number.

68099078 is a deficient number, since it is larger than the sum of its proper divisors (40030762).

68099078 is a wasteful number, since it uses less digits than its factorization.

68099078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 68099078 is about 8252.2165507214. The cubic root of 68099078 is about 408.3636503753.

The spelling of 68099078 in words is "sixty-eight million, ninety-nine thousand, seventy-eight".

Divisors: 1 2 19 38 181 362 3439 6878 9901 19802 188119 376238 1792081 3584162 34049539 68099078