Base | Representation |
---|---|
bin | 101000011010011… |
… | …011001000000000 |
3 | 1202020210202101202 |
4 | 220122123020000 |
5 | 2342032443423 |
6 | 151140120332 |
7 | 22542015353 |
oct | 5032331000 |
9 | 1666722352 |
10 | 678015488 |
11 | 3187a4087 |
12 | 16b0960a8 |
13 | aa6128c7 |
14 | 6609429a |
15 | 3e7cd728 |
hex | 2869b200 |
678015488 has 80 divisors (see below), whose sum is σ = 1459051704. Its totient is φ = 313589760.
The previous prime is 678015479. The next prime is 678015509. The reversal of 678015488 is 884510876.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 540469504 + 137545984 = 23248^2 + 11728^2 .
It is a super-3 number, since 3×6780154883 (a number of 27 digits) contains 333 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530306 + ... + 531582.
Almost surely, 2678015488 is an apocalyptic number.
678015488 is a gapful number since it is divisible by the number (68) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 678015488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729525852).
678015488 is an abundant number, since it is smaller than the sum of its proper divisors (781036216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
678015488 is a wasteful number, since it uses less digits than its factorization.
678015488 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1373 (or 1357 counting only the distinct ones).
The product of its (nonzero) digits is 430080, while the sum is 47.
The square root of 678015488 is about 26038.7305374129. The cubic root of 678015488 is about 878.5096537197.
The spelling of 678015488 in words is "six hundred seventy-eight million, fifteen thousand, four hundred eighty-eight".
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