Base | Representation |
---|---|
bin | 101000111010111000… |
… | …0010100010110111010 |
3 | 22101211011012210201210 |
4 | 1101311300110112322 |
5 | 2414431441241430 |
6 | 104211425023550 |
7 | 6230423502162 |
oct | 1216560242672 |
9 | 271734183653 |
10 | 87874946490 |
11 | 342a4130a21 |
12 | 15045184bb6 |
13 | 83957a1a76 |
14 | 43789ad5a2 |
15 | 2444a162b0 |
hex | 1475c145ba |
87874946490 has 32 divisors (see below), whose sum is σ = 210957773760. Its totient is φ = 23426885504.
The previous prime is 87874946459. The next prime is 87874946491. The reversal of 87874946490 is 9464947878.
It is not an unprimeable number, because it can be changed into a prime (87874946491) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290499 + ... + 510038.
It is an arithmetic number, because the mean of its divisors is an integer number (6592430430).
Almost surely, 287874946490 is an apocalyptic number.
87874946490 is an abundant number, since it is smaller than the sum of its proper divisors (123082827270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87874946490 is a wasteful number, since it uses less digits than its factorization.
87874946490 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 804206.
The product of its (nonzero) digits is 97542144, while the sum is 66.
The spelling of 87874946490 in words is "eighty-seven billion, eight hundred seventy-four million, nine hundred forty-six thousand, four hundred ninety".
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