Base | Representation |
---|---|
bin | 101000100100110111… |
… | …0111001010110111010 |
3 | 22022220200110112211110 |
4 | 1101021232321112322 |
5 | 2411423403020000 |
6 | 104010242541150 |
7 | 6203214656160 |
oct | 1211156712672 |
9 | 268820415743 |
10 | 87136376250 |
11 | 33a552381a0 |
12 | 14a799677b6 |
13 | 82a8779861 |
14 | 4308875230 |
15 | 23eec75850 |
hex | 1449bb95ba |
87136376250 has 320 divisors, whose sum is σ = 272497572864. Its totient is φ = 18040320000.
The previous prime is 87136376227. The next prime is 87136376269. The reversal of 87136376250 is 5267363178.
It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.
It is a self number, because there is not a number n which added to its sum of digits gives 87136376250.
It is an unprimeable number.
It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 151015962 + ... + 151016538.
Almost surely, 287136376250 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 87136376250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136248786432).
87136376250 is an abundant number, since it is smaller than the sum of its proper divisors (185361196614).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87136376250 is a wasteful number, since it uses less digits than its factorization.
87136376250 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1143 (or 1128 counting only the distinct ones).
The product of its (nonzero) digits is 1270080, while the sum is 48.
The spelling of 87136376250 in words is "eighty-seven billion, one hundred thirty-six million, three hundred seventy-six thousand, two hundred fifty".
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