Base | Representation |
---|---|
bin | 10011011101100011… |
… | …110001101100010010 |
3 | 1222221100102020001212 |
4 | 103131203301230102 |
5 | 320244113344443 |
6 | 13333331300122 |
7 | 1336563450455 |
oct | 233543615422 |
9 | 58840366055 |
10 | 20897012498 |
11 | 895390086a |
12 | 407244a642 |
13 | 1c8049656b |
14 | 10234a549c |
15 | 8248a7618 |
hex | 4dd8f1b12 |
20897012498 has 4 divisors (see below), whose sum is σ = 31345518750. Its totient is φ = 10448506248.
The previous prime is 20897012491. The next prime is 20897012501. The reversal of 20897012498 is 89421079802.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 14722667569 + 6174344929 = 121337^2 + 78577^2 .
It is not an unprimeable number, because it can be changed into a prime (20897012491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5224253123 + ... + 5224253126.
Almost surely, 220897012498 is an apocalyptic number.
20897012498 is a deficient number, since it is larger than the sum of its proper divisors (10448506252).
20897012498 is a wasteful number, since it uses less digits than its factorization.
20897012498 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10448506251.
The product of its (nonzero) digits is 580608, while the sum is 50.
The spelling of 20897012498 in words is "twenty billion, eight hundred ninety-seven million, twelve thousand, four hundred ninety-eight".
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