Base | Representation |
---|---|
bin | 111010010011… |
… | …1011111000000 |
3 | 2010112010202020 |
4 | 1310213133000 |
5 | 30311223212 |
6 | 3011121440 |
7 | 520562424 |
oct | 164473700 |
9 | 63463666 |
10 | 30570432 |
11 | 16290022 |
12 | a2a3280 |
13 | 6444819 |
14 | 40bab84 |
15 | 2a3cd8c |
hex | 1d277c0 |
30570432 has 56 divisors (see below), whose sum is σ = 81838800. Its totient is φ = 10070016.
The previous prime is 30570413. The next prime is 30570469. The reversal of 30570432 is 23407503.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a congruent number.
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 7 ways as a sum of consecutive naturals, for example, 16194 + ... + 17982.
Almost surely, 230570432 is an apocalyptic number.
30570432 is a gapful number since it is divisible by the number (32) 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 30570432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40919400).
30570432 is an abundant number, since it is smaller than the sum of its proper divisors (51268368).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30570432 is a wasteful number, since it uses less digits than its factorization.
30570432 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1893 (or 1883 counting only the distinct ones).
The product of its (nonzero) digits is 2520, while the sum is 24.
The square root of 30570432 is about 5529.0534452110. The cubic root of 30570432 is about 312.6803038430.
Adding to 30570432 its reverse (23407503), we get a palindrome (53977935).
The spelling of 30570432 in words is "thirty million, five hundred seventy thousand, four hundred thirty-two".
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