Base | Representation |
---|---|
bin | 100110011011… |
… | …1001000100110 |
3 | 1101220122220220 |
4 | 1030313020212 |
5 | 20124230044 |
6 | 1555505210 |
7 | 333155532 |
oct | 114671046 |
9 | 41818826 |
10 | 20148774 |
11 | 10412088 |
12 | 68b8206 |
13 | 4236069 |
14 | 2966bc2 |
15 | 1b80019 |
hex | 1337226 |
20148774 has 32 divisors (see below), whose sum is σ = 42892416. Its totient is φ = 6288000.
The previous prime is 20148773. The next prime is 20148787. The reversal of 20148774 is 47784102.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20148773) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25209 + ... + 25995.
It is an arithmetic number, because the mean of its divisors is an integer number (1340388).
Almost surely, 220148774 is an apocalyptic number.
20148774 is an abundant number, since it is smaller than the sum of its proper divisors (22743642).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20148774 is a wasteful number, since it uses less digits than its factorization.
20148774 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1060.
The product of its (nonzero) digits is 12544, while the sum is 33.
The square root of 20148774 is about 4488.7385755911. The cubic root of 20148774 is about 272.1131575745.
It can be divided in two parts, 2014877 and 4, that multiplied together give a palindrome (8059508).
The spelling of 20148774 in words is "twenty million, one hundred forty-eight thousand, seven hundred seventy-four".
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