Base | Representation |
---|---|
bin | 1010000011101111101… |
… | …1000001101011010100 |
3 | 121112001000020210202000 |
4 | 2200323323001223110 |
5 | 10312400312132243 |
6 | 211215101515300 |
7 | 15325146641226 |
oct | 2407373015324 |
9 | 545030223660 |
10 | 172804020948 |
11 | 67316401659 |
12 | 295a7872b30 |
13 | 133abb61590 |
14 | 8514226416 |
15 | 4765acb5d3 |
hex | 283bec1ad4 |
172804020948 has 96 divisors (see below), whose sum is σ = 488286019200. Its totient is φ = 52529824512.
The previous prime is 172804020943. The next prime is 172804020971. The reversal of 172804020948 is 849020408271.
172804020948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×1728040209482 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (172804020943) 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 31 ways as a sum of consecutive naturals, for example, 624913 + ... + 857976.
It is an arithmetic number, because the mean of its divisors is an integer number (5086312700).
Almost surely, 2172804020948 is an apocalyptic number.
172804020948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
172804020948 is an abundant number, since it is smaller than the sum of its proper divisors (315481998252).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
172804020948 is a wasteful number, since it uses less digits than its factorization.
172804020948 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1482998 (or 1482990 counting only the distinct ones).
The product of its (nonzero) digits is 258048, while the sum is 45.
The spelling of 172804020948 in words is "one hundred seventy-two billion, eight hundred four million, twenty thousand, nine hundred forty-eight".
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