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10801980 = 2232578573
BaseRepresentation
bin101001001101…
…001100111100
3202022210112100
4221031030330
510231130410
61023305100
7160546440
oct51151474
922283470
1010801980
116108762
12374b190
132312907
141612820
15e358c0
hexa4d33c

10801980 has 72 divisors (see below), whose sum is σ = 37451232. Its totient is φ = 2468736.

The previous prime is 10801979. The next prime is 10801997. The reversal of 10801980 is 8910801.

10801980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

10801980 is a modest number, since divided by 1980 gives 1080 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3027 + ... + 5546.

It is an arithmetic number, because the mean of its divisors is an integer number (520156).

Almost surely, 210801980 is an apocalyptic number.

10801980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10801980 is an abundant number, since it is smaller than the sum of its proper divisors (26649252).

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

10801980 is a wasteful number, since it uses less digits than its factorization.

10801980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595 (or 8590 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 10801980 is about 3286.6365786317. The cubic root of 10801980 is about 221.0553972085.

It can be divided in two parts, 10801 and 980, that added together give a triangular number (11781 = T153).

The spelling of 10801980 in words is "ten million, eight hundred one thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 8573 17146 25719 34292 42865 51438 60011 77157 85730 102876 120022 128595 154314 171460 180033 240044 257190 300055 308628 360066 385785 514380 540099 600110 720132 771570 900165 1080198 1200220 1543140 1800330 2160396 2700495 3600660 5400990 10801980