| Base | Representation |
|---|---|
| bin | 111101010110110… |
| … | …110110100000000 |
| 3 | 2122202000000212200 |
| 4 | 331112312310000 |
| 5 | 4102011324411 |
| 6 | 250051353200 |
| 7 | 34336525410 |
| oct | 7526666400 |
| 9 | 2582000780 |
| 10 | 1029401856 |
| 11 | 48908593a |
| 12 | 2488b2800 |
| 13 | 135362b32 |
| 14 | 9aa02640 |
| 15 | 6058ce56 |
| hex | 3d5b6d00 |
1029401856 has 216 divisors, whose sum is σ = 3437353920. Its totient is φ = 290193408.
The previous prime is 1029401839. The next prime is 1029401873. The reversal of 1029401856 is 6581049201.
1029401856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (1029401839) and next prime (1029401873).
It is a super-2 number, since 2×10294018562 = 2119336362272489472, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 1029401856.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1338240 + ... + 1339008.
Almost surely, 21029401856 is an apocalyptic number.
1029401856 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 1029401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718676960).
1029401856 is an abundant number, since it is smaller than the sum of its proper divisors (2407952064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1029401856 is an equidigital number, since it uses as much as digits as its factorization.
1029401856 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 881 (or 864 counting only the distinct ones).
The product of its (nonzero) digits is 17280, while the sum is 36.
The square root of 1029401856 is about 32084.2929795874. The cubic root of 1029401856 is about 1009.7061053858.
The spelling of 1029401856 in words is "one billion, twenty-nine million, four hundred one thousand, eight hundred fifty-six".
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