Base | Representation |
---|---|
bin | 10011111101100001… |
… | …110000000010001000 |
3 | 2001022201122010000000 |
4 | 103331201300002020 |
5 | 322343414233303 |
6 | 13502451043000 |
7 | 1356065326443 |
oct | 237541600210 |
9 | 61281563000 |
10 | 21433352328 |
11 | 90a9628923 |
12 | 41a1ba0460 |
13 | 20376331cb |
14 | 10747da65a |
15 | 8569ecda3 |
hex | 4fd870088 |
21433352328 has 128 divisors (see below), whose sum is σ = 60840720000. Its totient is φ = 7077680208.
The previous prime is 21433352273. The next prime is 21433352329. The reversal of 21433352328 is 82325333412.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is an ABA number since it can be written as A⋅BA, here for A=3, B=1926.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 21433352292 and 21433352301.
It is not an unprimeable number, because it can be changed into a prime (21433352329) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200311651 + ... + 200311757.
It is an arithmetic number, because the mean of its divisors is an integer number (475318125).
Almost surely, 221433352328 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21433352328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30420360000).
21433352328 is an abundant number, since it is smaller than the sum of its proper divisors (39407367672).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21433352328 is an frugal number, since it uses more digits than its factorization.
21433352328 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 348 (or 112 counting only the distinct ones).
The product of its digits is 103680, while the sum is 36.
The spelling of 21433352328 in words is "twenty-one billion, four hundred thirty-three million, three hundred fifty-two thousand, three hundred twenty-eight".
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