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108678980 = 22512742787
BaseRepresentation
bin1100111101001…
…00111101000100
321120111110112102
412132210331010
5210310211410
614441211232
72456520224
oct636447504
9246443472
10108678980
115638a143
1230490b18
1319691cb7
1410610084
15981b2a5
hex67a4f44

108678980 has 24 divisors (see below), whose sum is σ = 230028288. Its totient is φ = 43128288.

The previous prime is 108678967. The next prime is 108678989. The reversal of 108678980 is 89876801.

It is a super-2 number, since 2×1086789802 = 23622241387680800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (108678989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18854 + ... + 23933.

It is an arithmetic number, because the mean of its divisors is an integer number (9584512).

Almost surely, 2108678980 is an apocalyptic number.

108678980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108678980 is an abundant number, since it is smaller than the sum of its proper divisors (121349308).

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

108678980 is a wasteful number, since it uses less digits than its factorization.

108678980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42923 (or 42921 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 108678980 is about 10424.9211028190. The cubic root of 108678980 is about 477.2162070141.

The spelling of 108678980 in words is "one hundred eight million, six hundred seventy-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 127 254 508 635 1270 2540 42787 85574 171148 213935 427870 855740 5433949 10867898 21735796 27169745 54339490 108678980