| Base | Representation |
|---|---|
| bin | 111111011100010… |
| … | …110100001010000 |
| 3 | 2202011211222000200 |
| 4 | 333130112201100 |
| 5 | 4134441200010 |
| 6 | 253341415200 |
| 7 | 35243136621 |
| oct | 7734264120 |
| 9 | 2664758020 |
| 10 | 1064396880 |
| 11 | 4a6908148 |
| 12 | 25856a500 |
| 13 | 13c696551 |
| 14 | a1511a48 |
| 15 | 636a1cc0 |
| hex | 3f716850 |
1064396880 has 120 divisors (see below), whose sum is σ = 3642175368. Its totient is φ = 278473728.
The previous prime is 1064396863. The next prime is 1064396939. The reversal of 1064396880 is 886934601.
1064396880 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 565678656 + 498718224 = 23784^2 + 22332^2 .
It is a tau number, because it is divible by the number of its divisors (120).
It is a super-2 number, since 2×10643968802 = 2265881436307468800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
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, 24214 + ... + 52106.
Almost surely, 21064396880 is an apocalyptic number.
1064396880 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 1064396880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821087684).
1064396880 is an abundant number, since it is smaller than the sum of its proper divisors (2577778488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1064396880 is a wasteful number, since it uses less digits than its factorization.
1064396880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27965 (or 27956 counting only the distinct ones).
The product of its (nonzero) digits is 248832, while the sum is 45.
The square root of 1064396880 is about 32625.0958619281. The cubic root of 1064396880 is about 1021.0206623020.
The spelling of 1064396880 in words is "one billion, sixty-four million, three hundred ninety-six thousand, eight hundred eighty".
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