Base | Representation |
---|---|
bin | 11010010011000001… |
… | …101001101011001010 |
3 | 2200212211221011211112 |
4 | 122103001221223022 |
5 | 430312020043440 |
6 | 20545513530322 |
7 | 2016504116420 |
oct | 322301515312 |
9 | 80784834745 |
10 | 28236487370 |
11 | 10a7a840983 |
12 | 55804139a2 |
13 | 287cc0bac0 |
14 | 151c14d110 |
15 | b03dcb965 |
hex | 693069aca |
28236487370 has 128 divisors (see below), whose sum is σ = 63879169536. Its totient is φ = 8748850176.
The previous prime is 28236487351. The next prime is 28236487379. The reversal of 28236487370 is 7378463282.
It is not an unprimeable number, because it can be changed into a prime (28236487379) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10546472 + ... + 10549148.
It is an arithmetic number, because the mean of its divisors is an integer number (499056012).
Almost surely, 228236487370 is an apocalyptic number.
28236487370 is an abundant number, since it is smaller than the sum of its proper divisors (35642682166).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28236487370 is a wasteful number, since it uses less digits than its factorization.
28236487370 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2944.
The product of its (nonzero) digits is 2709504, while the sum is 50.
The spelling of 28236487370 in words is "twenty-eight billion, two hundred thirty-six million, four hundred eighty-seven thousand, three hundred seventy".
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