Base | Representation |
---|---|
bin | 1000010110000… |
… | …01011110010000 |
3 | 11212201021212022 |
4 | 10023001132100 |
5 | 120404422410 |
6 | 10540151012 |
7 | 1506656126 |
oct | 413013620 |
9 | 155637768 |
10 | 69998480 |
11 | 3656a992 |
12 | 1b538468 |
13 | 1166ac26 |
14 | 9421916 |
15 | 622a455 |
hex | 42c1790 |
69998480 has 40 divisors (see below), whose sum is σ = 166723704. Its totient is φ = 27315200.
The previous prime is 69998479. The next prime is 69998483. The reversal of 69998480 is 8489996.
It can be written as a sum of positive squares in 4 ways, for example, as 10523536 + 59474944 = 3244^2 + 7712^2 .
It is a tau number, because it is divible by the number of its divisors (40).
It is not an unprimeable number, because it can be changed into a prime (69998483) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7391 + ... + 13950.
Almost surely, 269998480 is an apocalyptic number.
It is an amenable number.
69998480 is an abundant number, since it is smaller than the sum of its proper divisors (96725224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
69998480 is a wasteful number, since it uses less digits than its factorization.
69998480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21395 (or 21389 counting only the distinct ones).
The product of its (nonzero) digits is 1119744, while the sum is 53.
The square root of 69998480 is about 8366.5094274733. The cubic root of 69998480 is about 412.1255469337.
The spelling of 69998480 in words is "sixty-nine million, nine hundred ninety-eight thousand, four hundred eighty".
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