| Base | Representation |
|---|---|
| bin | 100100111001011… |
| … | …0000010010000000 |
| 3 | 10012021121000222100 |
| 4 | 1021302300102000 |
| 5 | 10013414313403 |
| 6 | 322503310400 |
| 7 | 42452116050 |
| oct | 11162602200 |
| 9 | 3167530870 |
| 10 | 1238041728 |
| 11 | 58592a090 |
| 12 | 2a674b400 |
| 13 | 169653891 |
| 14 | ba5d3560 |
| 15 | 73a522a3 |
| hex | 49cb0480 |
1238041728 has 384 divisors, whose sum is σ = 4708679040. Its totient is φ = 302284800.
The previous prime is 1238041703. The next prime is 1238041733. The reversal of 1238041728 is 8271408321.
1238041728 is a `hidden beast` number, since 1 + 238 + 0 + 417 + 2 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (384).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 1238041692 and 1238041701.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1507558 + ... + 1508378.
It is an arithmetic number, because the mean of its divisors is an integer number (12262185).
Almost surely, 21238041728 is an apocalyptic number.
1238041728 is a gapful number since it is divisible by the number (18) 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 1238041728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354339520).
1238041728 is an abundant number, since it is smaller than the sum of its proper divisors (3470637312).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1238041728 is a wasteful number, since it uses less digits than its factorization.
1238041728 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 876 (or 861 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 36.
The square root of 1238041728 is about 35185.8171427068. The cubic root of 1238041728 is about 1073.7712234951.
It can be divided in two parts, 1238041 and 728, that added together give a square (1238769 = 11132).
The spelling of 1238041728 in words is "one billion, two hundred thirty-eight million, forty-one thousand, seven hundred twenty-eight".
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