Base | Representation |
---|---|
bin | 1011110010101… |
… | …10001011101001 |
3 | 20220010121120001 |
4 | 11321112023221 |
5 | 200310403040 |
6 | 13452103001 |
7 | 2310541003 |
oct | 571261351 |
9 | 226117501 |
10 | 98919145 |
11 | 50923466 |
12 | 29164a61 |
13 | 17655850 |
14 | d1cd373 |
15 | 8a3e59a |
hex | 5e562e9 |
98919145 has 32 divisors (see below), whose sum is σ = 133852320. Its totient is φ = 69672960.
The previous prime is 98919133. The next prime is 98919169. The reversal of 98919145 is 54191989.
98919145 is a nontrivial binomial coefficient, being equal to C(14066, 2).
It can be written as a sum of positive squares in 16 ways, for example, as 43401744 + 55517401 = 6588^2 + 7451^2 .
It is not a de Polignac number, because 98919145 - 215 = 98886377 is a prime.
It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a junction number, because it is equal to n+sod(n) for n = 98919095 and 98919104.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182575 + ... + 183115.
It is an arithmetic number, because the mean of its divisors is an integer number (4182885).
Almost surely, 298919145 is an apocalyptic number.
98919145 is the 14065-th triangular number and also the 7033-rd hexagonal number.
98919145 is the 4689-th centered nonagonal number.
It is an amenable number.
98919145 is a deficient number, since it is larger than the sum of its proper divisors (34933175).
98919145 is a wasteful number, since it uses less digits than its factorization.
98919145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 685.
The product of its digits is 116640, while the sum is 46.
The square root of 98919145 is about 9945.8104244953. The cubic root of 98919145 is about 462.4805270594.
The spelling of 98919145 in words is "ninety-eight million, nine hundred nineteen thousand, one hundred forty-five".
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