Base | Representation |
---|---|
bin | 111011000101111… |
… | …010011111000000 |
3 | 2120002111122101100 |
4 | 323011322133000 |
5 | 4012244443031 |
6 | 242213134400 |
7 | 33365545356 |
oct | 7305723700 |
9 | 2502448340 |
10 | 991406016 |
11 | 469694017 |
12 | 23802a400 |
13 | 12a51b5a3 |
14 | 959517d6 |
15 | 5c084de6 |
hex | 3b17a7c0 |
991406016 has 168 divisors, whose sum is σ = 3015518480. Its totient is φ = 310542336.
The previous prime is 991406011. The next prime is 991406029. The reversal of 991406016 is 610604199.
991406016 is a `hidden beast` number, since 9 + 9 + 1 + 40 + 601 + 6 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (991406011) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1717920 + ... + 1718496.
Almost surely, 2991406016 is an apocalyptic number.
991406016 is a gapful number since it is divisible by the number (96) 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 991406016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507759240).
991406016 is an abundant number, since it is smaller than the sum of its proper divisors (2024112464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
991406016 is a wasteful number, since it uses less digits than its factorization.
991406016 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 771 (or 758 counting only the distinct ones).
The product of its (nonzero) digits is 11664, while the sum is 36.
The square root of 991406016 is about 31486.6005786589. The cubic root of 991406016 is about 997.1270929758.
The spelling of 991406016 in words is "nine hundred ninety-one million, four hundred six thousand, sixteen".
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