Base | Representation |
---|---|
bin | 100100101011011101… |
… | …1111111111011001000 |
3 | 21112022110211222121012 |
4 | 1021112323333323020 |
5 | 2242304100331412 |
6 | 100104023103052 |
7 | 5455641533144 |
oct | 1112673777310 |
9 | 245273758535 |
10 | 78767980232 |
11 | 30450520427 |
12 | 133232a1a88 |
13 | 7573b0c236 |
14 | 3b532b2224 |
15 | 20b025ac22 |
hex | 1256effec8 |
78767980232 has 36 divisors (see below), whose sum is σ = 150028493265. Its totient is φ = 38769973440.
The previous prime is 78767980219. The next prime is 78767980237. The reversal of 78767980232 is 23208976787.
It is a happy number.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in 2 ways, for example, as 78358565476 + 409414756 = 279926^2 + 20234^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=198454.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (78767980237) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53184932 + ... + 53186412.
Almost surely, 278767980232 is an apocalyptic number.
It is an amenable number.
78767980232 is a deficient number, since it is larger than the sum of its proper divisors (71260513033).
78767980232 is an frugal number, since it uses more digits than its factorization.
78767980232 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3102 (or 1550 counting only the distinct ones).
The product of its (nonzero) digits is 14224896, while the sum is 59.
The spelling of 78767980232 in words is "seventy-eight billion, seven hundred sixty-seven million, nine hundred eighty thousand, two hundred thirty-two".
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