| Base | Representation |
|---|---|
| bin | 1100111110111… |
| … | …01000001100000 |
| 3 | 21120221010120100 |
| 4 | 12133131001200 |
| 5 | 210340034030 |
| 6 | 14450142400 |
| 7 | 2461464621 |
| oct | 637350140 |
| 9 | 246833510 |
| 10 | 108908640 |
| 11 | 56526745 |
| 12 | 30581a00 |
| 13 | 197426a9 |
| 14 | 1066da48 |
| 15 | 9864360 |
| hex | 67dd060 |
108908640 has 144 divisors (see below), whose sum is σ = 378928368. Its totient is φ = 28474368.
The previous prime is 108908621. The next prime is 108908671. The reversal of 108908640 is 46809801.
It is a happy number.
108908640 is a `hidden beast` number, since 1 + 0 + 8 + 9 + 0 + 8 + 640 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×1089086402 = 23722183733299200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 108908595 and 108908604.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75607 + ... + 77033.
It is an arithmetic number, because the mean of its divisors is an integer number (2631447).
Almost surely, 2108908640 is an apocalyptic number.
108908640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 108908640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189464184).
108908640 is an abundant number, since it is smaller than the sum of its proper divisors (270019728).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
108908640 is a wasteful number, since it uses less digits than its factorization.
108908640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1501 (or 1490 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 36.
The square root of 108908640 is about 10435.9302412387. The cubic root of 108908640 is about 477.5521209884.
The spelling of 108908640 in words is "one hundred eight million, nine hundred eight thousand, six hundred forty".
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