Base | Representation |
---|---|
bin | 100101100110… |
… | …0100111000000 |
3 | 1101002111101200 |
4 | 1023030213000 |
5 | 20021244243 |
6 | 1542301200 |
7 | 326360460 |
oct | 113144700 |
9 | 41074350 |
10 | 19712448 |
11 | 10144288 |
12 | 6727800 |
13 | 4112592 |
14 | 2891ba0 |
15 | 1ae5ad3 |
hex | 12cc9c0 |
19712448 has 84 divisors (see below), whose sum is σ = 64587120. Its totient is φ = 5630976.
The previous prime is 19712423. The next prime is 19712467. The reversal of 19712448 is 84421791.
It is a tau number, because it is divible by the number of its divisors (84).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1588 + ... + 6476.
Almost surely, 219712448 is an apocalyptic number.
19712448 is a gapful number since it is divisible by the number (18) 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 19712448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32293560).
19712448 is an abundant number, since it is smaller than the sum of its proper divisors (44874672).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19712448 is a wasteful number, since it uses less digits than its factorization.
19712448 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4914 (or 4901 counting only the distinct ones).
The product of its digits is 16128, while the sum is 36.
The square root of 19712448 is about 4439.8702683750. The cubic root of 19712448 is about 270.1345831109.
The spelling of 19712448 in words is "nineteen million, seven hundred twelve thousand, four hundred forty-eight".
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