Base | Representation |
---|---|
bin | 101000101110001111… |
… | …0101111101110101100 |
3 | 22100201121022111111020 |
4 | 1101130132233232230 |
5 | 2413044413101422 |
6 | 104101400254140 |
7 | 6214054316103 |
oct | 1213436575654 |
9 | 270647274436 |
10 | 87450909612 |
11 | 340a6838820 |
12 | 14b47171350 |
13 | 8328995781 |
14 | 433854d03a |
15 | 241c6a595c |
hex | 145c7afbac |
87450909612 has 48 divisors (see below), whose sum is σ = 227779128192. Its totient is φ = 25883988480.
The previous prime is 87450909599. The next prime is 87450909631. The reversal of 87450909612 is 21690905478.
It is an alternating number because its digits alternate between even and odd.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7697893 + ... + 7709244.
It is an arithmetic number, because the mean of its divisors is an integer number (4745398504).
Almost surely, 287450909612 is an apocalyptic number.
It is an amenable number.
87450909612 is an abundant number, since it is smaller than the sum of its proper divisors (140328218580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87450909612 is a wasteful number, since it uses less digits than its factorization.
87450909612 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15407198 (or 15407196 counting only the distinct ones).
The product of its (nonzero) digits is 1088640, while the sum is 51.
The spelling of 87450909612 in words is "eighty-seven billion, four hundred fifty million, nine hundred nine thousand, six hundred twelve".
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