| Base | Representation |
|---|---|
| bin | 101101101000100… |
| … | …0100001011011000 |
| 3 | 10221201020000211010 |
| 4 | 1123101010023120 |
| 5 | 11113441401331 |
| 6 | 411534533520 |
| 7 | 52641662400 |
| oct | 13321041330 |
| 9 | 3851200733 |
| 10 | 1531200216 |
| 11 | 716360427 |
| 12 | 3689672a0 |
| 13 | 1b52c7640 |
| 14 | 107505800 |
| 15 | 8e65de46 |
| hex | 5b4442d8 |
1531200216 has 192 divisors, whose sum is σ = 4899847680. Its totient is φ = 395055360.
The previous prime is 1531200211. The next prime is 1531200221. The reversal of 1531200216 is 6120021351.
It is an interprime number because it is at equal distance from previous prime (1531200211) and next prime (1531200221).
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 1531200192 and 1531200201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1531200211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717471 + ... + 719601.
It is an arithmetic number, because the mean of its divisors is an integer number (25520040).
Almost surely, 21531200216 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1531200216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449923840).
1531200216 is an abundant number, since it is smaller than the sum of its proper divisors (3368647464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1531200216 is a wasteful number, since it uses less digits than its factorization.
1531200216 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2214 (or 2203 counting only the distinct ones).
The product of its (nonzero) digits is 360, while the sum is 21.
The square root of 1531200216 is about 39130.5534844576. The cubic root of 1531200216 is about 1152.5965816705.
Adding to 1531200216 its reverse (6120021351), we get a palindrome (7651221567).
The spelling of 1531200216 in words is "one billion, five hundred thirty-one million, two hundred thousand, two hundred sixteen".
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