| Base | Representation |
|---|---|
| bin | 10001100110110011000… |
| … | …100110101100111100000 |
| 3 | 11021122221022212022212100 |
| 4 | 101212303010311213200 |
| 5 | 124310323342400112 |
| 6 | 2323452121530400 |
| 7 | 153261131005323 |
| oct | 21466304654740 |
| 9 | 4248838768770 |
| 10 | 1209890200032 |
| 11 | 427125526828 |
| 12 | 176599943a00 |
| 13 | 8a12760cb87 |
| 14 | 427b7c687ba |
| 15 | 2171310a2dc |
| hex | 119b31359e0 |
1209890200032 has 144 divisors (see below), whose sum is σ = 3555298852560. Its totient is φ = 389988919296.
The previous prime is 1209890200027. The next prime is 1209890200067. The reversal of 1209890200032 is 2300020989021.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×12098902000322 (a number of 25 digits) 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 1209890200032.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1388644 + ... + 2085212.
It is an arithmetic number, because the mean of its divisors is an integer number (24689575365).
Almost surely, 21209890200032 is an apocalyptic number.
1209890200032 is a gapful number since it is divisible by the number (12) 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 1209890200032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777649426280).
1209890200032 is an abundant number, since it is smaller than the sum of its proper divisors (2345408652528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1209890200032 is a wasteful number, since it uses less digits than its factorization.
1209890200032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 696785 (or 696774 counting only the distinct ones).
The product of its (nonzero) digits is 15552, while the sum is 36.
The spelling of 1209890200032 in words is "one trillion, two hundred nine billion, eight hundred ninety million, two hundred thousand, thirty-two".
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