Base | Representation |
---|---|
bin | 101010010111001110000 |
3 | 2121112011202 |
4 | 11102321300 |
5 | 323410034 |
6 | 45430332 |
7 | 14541032 |
oct | 5227160 |
9 | 2545152 |
10 | 1388144 |
11 | 868a2a |
12 | 56b3a8 |
13 | 397ab4 |
14 | 281c52 |
15 | 1c647e |
hex | 152e70 |
1388144 has 20 divisors (see below), whose sum is σ = 2719320. Its totient is φ = 686400.
The previous prime is 1388141. The next prime is 1388161. The reversal of 1388144 is 4418831.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1388141) 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, 1187 + ... + 2045.
It is an arithmetic number, because the mean of its divisors is an integer number (135966).
21388144 is an apocalyptic number.
It is an amenable number.
1388144 is a deficient number, since it is larger than the sum of its proper divisors (1331176).
1388144 is a wasteful number, since it uses less digits than its factorization.
1388144 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 968 (or 962 counting only the distinct ones).
The product of its digits is 3072, while the sum is 29.
The square root of 1388144 is about 1178.1952300022. The cubic root of 1388144 is about 111.5522086535.
The spelling of 1388144 in words is "one million, three hundred eighty-eight thousand, one hundred forty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •