Base | Representation |
---|---|
bin | 111010111000… |
… | …0100111001100 |
3 | 2011002100122000 |
4 | 1311300213030 |
5 | 30400314324 |
6 | 3021352300 |
7 | 523250616 |
oct | 165604714 |
9 | 64070560 |
10 | 30869964 |
11 | 16475074 |
12 | a408690 |
13 | 651ac68 |
14 | 4157db6 |
15 | 2a9b9c9 |
hex | 1d709cc |
30869964 has 48 divisors (see below), whose sum is σ = 80502240. Its totient is φ = 10229760.
The previous prime is 30869953. The next prime is 30869981. The reversal of 30869964 is 46996803.
It is a super-2 number, since 2×308699642 = 1905909354722592, which contains 22 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20104 + ... + 21584.
It is an arithmetic number, because the mean of its divisors is an integer number (1677130).
Almost surely, 230869964 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 30869964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40251120).
30869964 is an abundant number, since it is smaller than the sum of its proper divisors (49632276).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30869964 is a wasteful number, since it uses less digits than its factorization.
30869964 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1687 (or 1679 counting only the distinct ones).
The product of its (nonzero) digits is 279936, while the sum is 45.
The square root of 30869964 is about 5556.0745135392. The cubic root of 30869964 is about 313.6982103160.
The spelling of 30869964 in words is "thirty million, eight hundred sixty-nine thousand, nine hundred sixty-four".
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