Base | Representation |
---|---|
bin | 10010101000110111… |
… | …101001111001111000 |
3 | 1220122202001022110120 |
4 | 102220313221321320 |
5 | 311441313443112 |
6 | 13105512413240 |
7 | 1305640646151 |
oct | 225067517170 |
9 | 56582038416 |
10 | 20013031032 |
11 | 853a91a475 |
12 | 3a663a7220 |
13 | 1b6c2bacc7 |
14 | d7bd18928 |
15 | 7c1e91e8c |
hex | 4a8de9e78 |
20013031032 has 64 divisors (see below), whose sum is σ = 52240308480. Its totient is φ = 6377006592.
The previous prime is 20013030977. The next prime is 20013031039. The reversal of 20013031032 is 23013031002.
It is a super-2 number, since 2×200130310322 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20013031039) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953968 + ... + 974720.
It is an arithmetic number, because the mean of its divisors is an integer number (816254820).
Almost surely, 220013031032 is an apocalyptic number.
It is an amenable number.
20013031032 is an abundant number, since it is smaller than the sum of its proper divisors (32227277448).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20013031032 is a wasteful number, since it uses less digits than its factorization.
20013031032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22532 (or 22528 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 15.
Adding to 20013031032 its reverse (23013031002), we get a palindrome (43026062034).
The spelling of 20013031032 in words is "twenty billion, thirteen million, thirty-one thousand, thirty-two".
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