Base | Representation |
---|---|
bin | 1000100110000… |
… | …10101001101111 |
3 | 12000200002020112 |
4 | 10103002221233 |
5 | 121424203323 |
6 | 11053210235 |
7 | 1533562301 |
oct | 423025157 |
9 | 160602215 |
10 | 72100463 |
11 | 37776166 |
12 | 2019097b |
13 | 11c258c6 |
14 | 980b971 |
15 | 64e3178 |
hex | 44c2a6f |
72100463 has 4 divisors (see below), whose sum is σ = 72144600. Its totient is φ = 72056328.
The previous prime is 72100411. The next prime is 72100481. The reversal of 72100463 is 36400127.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36400127 = 3301 ⋅11027.
It is a cyclic number.
It is not a de Polignac number, because 72100463 - 214 = 72084079 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72100493) by changing a digit.
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 3 ways as a sum of consecutive naturals, for example, 19520 + ... + 22917.
It is an arithmetic number, because the mean of its divisors is an integer number (18036150).
Almost surely, 272100463 is an apocalyptic number.
72100463 is a deficient number, since it is larger than the sum of its proper divisors (44137).
72100463 is a wasteful number, since it uses less digits than its factorization.
72100463 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44136.
The product of its (nonzero) digits is 1008, while the sum is 23.
The square root of 72100463 is about 8491.1991497079. The cubic root of 72100463 is about 416.2101667793.
The spelling of 72100463 in words is "seventy-two million, one hundred thousand, four hundred sixty-three".
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