Base | Representation |
---|---|
bin | 111001001110… |
… | …0101010000000 |
3 | 2002110020201111 |
4 | 1302130222000 |
5 | 30140024132 |
6 | 2551013104 |
7 | 513003532 |
oct | 162345200 |
9 | 62406644 |
10 | 30001792 |
11 | 15a31877 |
12 | a06a194 |
13 | 62a5a52 |
14 | 3dad852 |
15 | 2979647 |
hex | 1c9ca80 |
30001792 has 32 divisors (see below), whose sum is σ = 61053120. Its totient is φ = 14678784.
The previous prime is 30001789. The next prime is 30001793. The reversal of 30001792 is 29710003.
It is a tau number, because it is divible by the number of its divisors (32).
It is a super-2 number, since 2×300017922 = 1800215046422528, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (30001793) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523 + ... + 8509.
It is an arithmetic number, because the mean of its divisors is an integer number (1907910).
Almost surely, 230001792 is an apocalyptic number.
30001792 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 30001792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30526560).
30001792 is an abundant number, since it is smaller than the sum of its proper divisors (31051328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30001792 is an equidigital number, since it uses as much as digits as its factorization.
30001792 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5048 (or 5036 counting only the distinct ones).
The product of its (nonzero) digits is 378, while the sum is 22.
The square root of 30001792 is about 5477.3891590794. The cubic root of 30001792 is about 310.7294373174.
Adding to 30001792 its reverse (29710003), we get a palindrome (59711795).
The spelling of 30001792 in words is "thirty million, one thousand, seven hundred ninety-two".
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