| Base | Representation |
|---|---|
| bin | 11110110100111101… |
| … | …11010011000000000 |
| 3 | 1120201102120101100000 |
| 4 | 33122132322120000 |
| 5 | 232343403012100 |
| 6 | 11334141200000 |
| 7 | 1124064255666 |
| oct | 173236723000 |
| 9 | 46642511300 |
| 10 | 16550438400 |
| 11 | 7023322371 |
| 12 | 325a860000 |
| 13 | 1739b1b122 |
| 14 | b300d6c36 |
| 15 | 66cec3900 |
| hex | 3da7ba600 |
16550438400 has 720 divisors, whose sum is σ = 65244042864. Its totient is φ = 4140564480.
The previous prime is 16550438393. The next prime is 16550438473. The reversal of 16550438400 is 483405561.
It is a happy number.
16550438400 is a `hidden beast` number, since 165 + 50 + 43 + 8 + 400 = 666.
16550438400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (720).
It is a super-3 number, since 3×165504384003 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
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 71 ways as a sum of consecutive naturals, for example, 52876644 + ... + 52876956.
Almost surely, 216550438400 is an apocalyptic number.
16550438400 is a gapful number since it is divisible by the number (10) 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 16550438400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32622021432).
16550438400 is an abundant number, since it is smaller than the sum of its proper divisors (48693604464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16550438400 is an equidigital number, since it uses as much as digits as its factorization.
16550438400 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 373 (or 340 counting only the distinct ones).
The product of its (nonzero) digits is 57600, while the sum is 36.
The spelling of 16550438400 in words is "sixteen billion, five hundred fifty million, four hundred thirty-eight thousand, four hundred".
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