Base | Representation |
---|---|
bin | 1100110110111… |
… | …01101111000101 |
3 | 21111222000012020 |
4 | 12123131233011 |
5 | 210103103411 |
6 | 14411513353 |
7 | 2446551222 |
oct | 633355705 |
9 | 244860166 |
10 | 107862981 |
11 | 55982066 |
12 | 30158859 |
13 | 19467765 |
14 | 1047a949 |
15 | 9709606 |
hex | 66ddbc5 |
107862981 has 16 divisors (see below), whose sum is σ = 156272640. Its totient is φ = 65925360.
The previous prime is 107862973. The next prime is 107862991. The reversal of 107862981 is 189268701.
It is not a de Polignac number, because 107862981 - 23 = 107862973 is a prime.
It is a super-2 number, since 2×1078629812 = 23268845340412722, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (107862901) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28755 + ... + 32288.
It is an arithmetic number, because the mean of its divisors is an integer number (9767040).
Almost surely, 2107862981 is an apocalyptic number.
107862981 is the 6569-th centered pentagonal number.
It is an amenable number.
107862981 is a deficient number, since it is larger than the sum of its proper divisors (48409659).
107862981 is a wasteful number, since it uses less digits than its factorization.
107862981 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 61096.
The product of its (nonzero) digits is 48384, while the sum is 42.
The square root of 107862981 is about 10385.7104234617. The cubic root of 107862981 is about 476.0188376722.
The spelling of 107862981 in words is "one hundred seven million, eight hundred sixty-two thousand, nine hundred eighty-one".
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