Base | Representation |
---|---|
bin | 100001111100011110… |
… | …1101100100111110000 |
3 | 20222011021102210112100 |
4 | 1003320331230213300 |
5 | 2143242434243411 |
6 | 53253234500400 |
7 | 5160304114050 |
oct | 1037075544760 |
9 | 228137383470 |
10 | 72896399856 |
11 | 28a08132165 |
12 | 12164a34700 |
13 | 6b49527817 |
14 | 3757571560 |
15 | 1d69a3d456 |
hex | 10f8f6c9f0 |
72896399856 has 240 divisors, whose sum is σ = 249091398400. Its totient is φ = 19436516352.
The previous prime is 72896399831. The next prime is 72896399861. The reversal of 72896399856 is 65899369827.
72896399856 is a `hidden beast` number, since 72 + 8 + 96 + 399 + 85 + 6 = 666.
It is a super-2 number, since 2×728963998562 (a number of 23 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (72).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1254780 + ... + 1311588.
Almost surely, 272896399856 is an apocalyptic number.
72896399856 is a gapful number since it is divisible by the number (76) 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 72896399856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124545699200).
72896399856 is an abundant number, since it is smaller than the sum of its proper divisors (176194998544).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72896399856 is a wasteful number, since it uses less digits than its factorization.
72896399856 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56916 (or 56907 counting only the distinct ones).
The product of its digits is 352719360, while the sum is 72.
The spelling of 72896399856 in words is "seventy-two billion, eight hundred ninety-six million, three hundred ninety-nine thousand, eight hundred fifty-six".
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