| Base | Representation |
|---|---|
| bin | 110000100101111… |
| … | …1100011110000000 |
| 3 | 11012122010001121200 |
| 4 | 1201023330132000 |
| 5 | 11314403134331 |
| 6 | 425443421200 |
| 7 | 55256126112 |
| oct | 14113743600 |
| 9 | 4178101550 |
| 10 | 1630521216 |
| 11 | 7674287a5 |
| 12 | 396084800 |
| 13 | 1cca6106c |
| 14 | 11679b3b2 |
| 15 | 9822c5e6 |
| hex | 612fc780 |
1630521216 has 96 divisors (see below), whose sum is σ = 4769118120. Its totient is φ = 534574080.
The previous prime is 1630521199. The next prime is 1630521223. The reversal of 1630521216 is 6121250361.
1630521216 is a `hidden beast` number, since 1 + 630 + 5 + 2 + 1 + 21 + 6 = 666.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×16305212162 = 5317198871652237312, which contains 22 as substring.
It is an alternating number because its digits alternate between odd and even.
It is a self number, because there is not a number n which added to its sum of digits gives 1630521216.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58671 + ... + 81873.
Almost surely, 21630521216 is an apocalyptic number.
1630521216 is a gapful number since it is divisible by the number (16) 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 1630521216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384559060).
1630521216 is an abundant number, since it is smaller than the sum of its proper divisors (3138596904).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1630521216 is a wasteful number, since it uses less digits than its factorization.
1630521216 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23284 (or 23269 counting only the distinct ones).
The product of its (nonzero) digits is 2160, while the sum is 27.
The square root of 1630521216 is about 40379.7129261712. The cubic root of 1630521216 is about 1176.9973491195.
Adding to 1630521216 its reverse (6121250361), we get a palindrome (7751771577).
The spelling of 1630521216 in words is "one billion, six hundred thirty million, five hundred twenty-one thousand, two hundred sixteen".
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