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286163980 = 22514308199
BaseRepresentation
bin10001000011101…
…000010000001100
3201221110122011221
4101003220100030
51041224221410
644221253124
710043232214
oct2103502014
9657418157
10286163980
11137594263
127ba041a4
13473951cb
142a011244
151a1c94da
hex110e840c

286163980 has 12 divisors (see below), whose sum is σ = 600944400. Its totient is φ = 114465584.

The previous prime is 286163951. The next prime is 286163987. The reversal of 286163980 is 89361682.

It is not an unprimeable number, because it can be changed into a prime (286163987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7154080 + ... + 7154119.

It is an arithmetic number, because the mean of its divisors is an integer number (50078700).

Almost surely, 2286163980 is an apocalyptic number.

286163980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286163980 is an abundant number, since it is smaller than the sum of its proper divisors (314780420).

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

286163980 is a wasteful number, since it uses less digits than its factorization.

286163980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14308208 (or 14308206 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 286163980 is about 16916.3820008890. The cubic root of 286163980 is about 658.9791226865.

The spelling of 286163980 in words is "two hundred eighty-six million, one hundred sixty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 14308199 28616398 57232796 71540995 143081990 286163980