| Base | Representation |
|---|---|
| bin | 101111101110000… |
| … | …1001001100110110 |
| 3 | 11010120222001122000 |
| 4 | 1133130021030312 |
| 5 | 11234402310423 |
| 6 | 422515320130 |
| 7 | 54452042112 |
| oct | 13734111466 |
| 9 | 4116861560 |
| 10 | 1601213238 |
| 11 | 751930229 |
| 12 | 3882b0046 |
| 13 | 1c696c071 |
| 14 | 11292c742 |
| 15 | 9588d843 |
| hex | 5f709336 |
1601213238 has 64 divisors (see below), whose sum is σ = 3815424000. Its totient is φ = 495960192.
The previous prime is 1601213233. The next prime is 1601213261. The reversal of 1601213238 is 8323121061.
It is a happy number.
1601213238 is a `hidden beast` number, since 1 + 601 + 21 + 3 + 2 + 38 = 666.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1601213233) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61483 + ... + 83561.
It is an arithmetic number, because the mean of its divisors is an integer number (59616000).
Almost surely, 21601213238 is an apocalyptic number.
1601213238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 1601213238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1907712000).
1601213238 is an abundant number, since it is smaller than the sum of its proper divisors (2214210762).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1601213238 is a wasteful number, since it uses less digits than its factorization.
1601213238 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22186 (or 22180 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 27.
The square root of 1601213238 is about 40015.1626011941. The cubic root of 1601213238 is about 1169.9026480472.
Adding to 1601213238 its reverse (8323121061), we get a palindrome (9924334299).
The spelling of 1601213238 in words is "one billion, six hundred one million, two hundred thirteen thousand, two hundred thirty-eight".
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