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108978054 = 23473831009
BaseRepresentation
bin1100111111011…
…01111110000110
321121001122210020
412133231332012
5210344244204
614451440010
72462204163
oct637557606
9247048706
10108978054
1156573909
12305b6006
1319768173
141068b06a
159879bd9
hex67edf86

108978054 has 32 divisors (see below), whose sum is σ = 223395840. Its totient is φ = 35425152.

The previous prime is 108978047. The next prime is 108978073. The reversal of 108978054 is 450879801.

It is a junction number, because it is equal to n+sod(n) for n = 108977997 and 108978015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107502 + ... + 108510.

It is an arithmetic number, because the mean of its divisors is an integer number (6981120).

Almost surely, 2108978054 is an apocalyptic number.

108978054 is an abundant number, since it is smaller than the sum of its proper divisors (114417786).

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

108978054 is a wasteful number, since it uses less digits than its factorization.

108978054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 108978054 is about 10439.2554332194. The cubic root of 108978054 is about 477.6535569652.

The spelling of 108978054 in words is "one hundred eight million, nine hundred seventy-eight thousand, fifty-four".

Divisors: 1 2 3 6 47 94 141 282 383 766 1009 1149 2018 2298 3027 6054 18001 36002 47423 54003 94846 108006 142269 284538 386447 772894 1159341 2318682 18163009 36326018 54489027 108978054