Base | Representation |
---|---|
bin | 101010101010101… |
… | …0000000000000000 |
3 | 10200202212112112112 |
4 | 1111111100000000 |
5 | 10412444241140 |
6 | 354020514452 |
7 | 50322454553 |
oct | 12525200000 |
9 | 3622775475 |
10 | 1431633920 |
11 | 675135832 |
12 | 33b54ba28 |
13 | 19a7a6382 |
14 | d81c869a |
15 | 85a42c65 |
hex | 55550000 |
1431633920 has 136 divisors (see below), whose sum is σ = 3652162344. Its totient is φ = 536870912.
The previous prime is 1431633901. The next prime is 1431633943. The reversal of 1431633920 is 293361341.
It can be written as a sum of positive squares in 4 ways, for example, as 736362496 + 695271424 = 27136^2 + 26368^2 .
It is a tau number, because it is divible by the number of its divisors (136).
It is a Harshad number since it is a multiple of its sum of digits (32).
It is a nialpdrome in base 4 and base 16.
It is a zygodrome in base 4 and base 16.
It is a congruent number.
It is an unprimeable number.
In principle, a polygon with 1431633920 sides can be constructed with ruler and compass.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5570432 + ... + 5570688.
Almost surely, 21431633920 is an apocalyptic number.
1431633920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1431633920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1826081172).
1431633920 is an abundant number, since it is smaller than the sum of its proper divisors (2220528424).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1431633920 is an frugal number, since it uses more digits than its factorization.
1431633920 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 311 (or 281 counting only the distinct ones).
The product of its (nonzero) digits is 11664, while the sum is 32.
The square root of 1431633920 is about 37836.9385653755. The cubic root of 1431633920 is about 1127.0521017476.
The spelling of 1431633920 in words is "one billion, four hundred thirty-one million, six hundred thirty-three thousand, nine hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •