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68860860 = 22352933917
BaseRepresentation
bin1000001101010…
…11101110111100
311210120111100020
410012223232330
5120112021420
610455532140
71464210345
oct406535674
9153514306
1068860860
1135963202
121b08a050
1311360193
1492070cc
1560a3340
hex41abbbc

68860860 has 48 divisors (see below), whose sum is σ = 193517856. Its totient is φ = 18295552.

The previous prime is 68860823. The next prime is 68860861. The reversal of 68860860 is 6806886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68860861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15622 + ... + 19538.

It is an arithmetic number, because the mean of its divisors is an integer number (4031622).

Almost surely, 268860860 is an apocalyptic number.

68860860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68860860 is an abundant number, since it is smaller than the sum of its proper divisors (124656996).

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

68860860 is a wasteful number, since it uses less digits than its factorization.

68860860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 68860860 is about 8298.2443926411. The cubic root of 68860860 is about 409.8807108843.

The spelling of 68860860 in words is "sixty-eight million, eight hundred sixty thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 293 586 879 1172 1465 1758 2930 3516 3917 4395 5860 7834 8790 11751 15668 17580 19585 23502 39170 47004 58755 78340 117510 235020 1147681 2295362 3443043 4590724 5738405 6886086 11476810 13772172 17215215 22953620 34430430 68860860