Base | Representation |
---|---|
bin | 1011010101010001111… |
… | …00000011110001000000 |
3 | 1101020001122202020011001 |
4 | 11222220330003301000 |
5 | 22334423112413432 |
6 | 454513534101344 |
7 | 40063143026533 |
oct | 5525074036100 |
9 | 1336048666131 |
10 | 389381372992 |
11 | 1401546a77a7 |
12 | 6356b04a854 |
13 | 2a945732ab1 |
14 | 14bbbc08a1a |
15 | a1de58d9e7 |
hex | 5aa8f03c40 |
389381372992 has 28 divisors (see below), whose sum is σ = 785774918160. Its totient is φ = 191390842496.
The previous prime is 389381372959. The next prime is 389381372993. The reversal of 389381372992 is 299273183983.
It is a Harshad number since it is a multiple of its sum of digits (64).
It is not an unprimeable number, because it can be changed into a prime (389381372993) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51556258 + ... + 51563809.
Almost surely, 2389381372992 is an apocalyptic number.
389381372992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.
It is an amenable number.
389381372992 is an abundant number, since it is smaller than the sum of its proper divisors (396393545168).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
389381372992 is a wasteful number, since it uses less digits than its factorization.
389381372992 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 103120138 (or 103120128 counting only the distinct ones).
The product of its digits is 35271936, while the sum is 64.
The spelling of 389381372992 in words is "three hundred eighty-nine billion, three hundred eighty-one million, three hundred seventy-two thousand, nine hundred ninety-two".
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