Base | Representation |
---|---|
bin | 100000100000011111… |
… | …1010010000000101000 |
3 | 20200012011110122200020 |
4 | 1001000333102000220 |
5 | 2120432302314100 |
6 | 52023054240440 |
7 | 5020644400164 |
oct | 1010077220050 |
9 | 220164418606 |
10 | 69809807400 |
11 | 276738a8603 |
12 | 116431b6120 |
13 | 6776c15358 |
14 | 3543667ca4 |
15 | 1c38a925a0 |
hex | 1040fd2028 |
69809807400 has 48 divisors (see below), whose sum is σ = 216410404800. Its totient is φ = 18615948480.
The previous prime is 69809807377. The next prime is 69809807407. The reversal of 69809807400 is 470890896.
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (69809807407) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58174240 + ... + 58175439.
It is an arithmetic number, because the mean of its divisors is an integer number (4508550100).
Almost surely, 269809807400 is an apocalyptic number.
69809807400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
69809807400 is an abundant number, since it is smaller than the sum of its proper divisors (146600597400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
69809807400 is a wasteful number, since it uses less digits than its factorization.
69809807400 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 116349698 (or 116349689 counting only the distinct ones).
The product of its (nonzero) digits is 870912, while the sum is 51.
The spelling of 69809807400 in words is "sixty-nine billion, eight hundred nine million, eight hundred seven thousand, four hundred".
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