Base | Representation |
---|---|
bin | 1011111110010… |
… | …01001110110101 |
3 | 20222222211100200 |
4 | 11333021032311 |
5 | 201203021330 |
6 | 13544431113 |
7 | 2326500654 |
oct | 577111665 |
9 | 228884320 |
10 | 100438965 |
11 | 51771310 |
12 | 29778499 |
13 | 17a68553 |
14 | d4a719b |
15 | 8c3ea60 |
hex | 5fc93b5 |
100438965 has 24 divisors (see below), whose sum is σ = 189921888. Its totient is φ = 48697440.
The previous prime is 100438957. The next prime is 100438969. The reversal of 100438965 is 569834001.
It is not a de Polignac number, because 100438965 - 23 = 100438957 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (100438969) 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 23 ways as a sum of consecutive naturals, for example, 100959 + ... + 101948.
It is an arithmetic number, because the mean of its divisors is an integer number (7913412).
Almost surely, 2100438965 is an apocalyptic number.
100438965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
100438965 is a deficient number, since it is larger than the sum of its proper divisors (89482923).
100438965 is a wasteful number, since it uses less digits than its factorization.
100438965 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 202929 (or 202926 counting only the distinct ones).
The product of its (nonzero) digits is 25920, while the sum is 36.
The square root of 100438965 is about 10021.9242164367. The cubic root of 100438965 is about 464.8370570262.
The spelling of 100438965 in words is "one hundred million, four hundred thirty-eight thousand, nine hundred sixty-five".
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