Base | Representation |
---|---|
bin | 111001011111… |
… | …1101010000010 |
3 | 2002201112101012 |
4 | 1302333222002 |
5 | 30204121104 |
6 | 2554040522 |
7 | 514141514 |
oct | 162775202 |
9 | 62645335 |
10 | 30145154 |
11 | 1601a556 |
12 | a119142 |
13 | 6326090 |
14 | 4009bb4 |
15 | 29a6d6e |
hex | 1cbfa82 |
30145154 has 8 divisors (see below), whose sum is σ = 48696060. Its totient is φ = 13913136.
The previous prime is 30145151. The next prime is 30145169. The reversal of 30145154 is 45154103.
It can be written as a sum of positive squares in 2 ways, for example, as 29757025 + 388129 = 5455^2 + 623^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not an unprimeable number, because it can be changed into a prime (30145151) 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, 579689 + ... + 579740.
Almost surely, 230145154 is an apocalyptic number.
30145154 is a deficient number, since it is larger than the sum of its proper divisors (18550906).
30145154 is a wasteful number, since it uses less digits than its factorization.
30145154 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1159444.
The product of its (nonzero) digits is 1200, while the sum is 23.
The square root of 30145154 is about 5490.4602721448. The cubic root of 30145154 is about 311.2235858726.
Adding to 30145154 its reverse (45154103), we get a palindrome (75299257).
The spelling of 30145154 in words is "thirty million, one hundred forty-five thousand, one hundred fifty-four".
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