Base | Representation |
---|---|
bin | 111010100100… |
… | …0000110101101 |
3 | 2010202221000212 |
4 | 1311020012231 |
5 | 30330012140 |
6 | 3014032205 |
7 | 521660111 |
oct | 165100655 |
9 | 63687025 |
10 | 30704045 |
11 | 16371449 |
12 | a348665 |
13 | 6490598 |
14 | 4113741 |
15 | 2a67765 |
hex | 1d481ad |
30704045 has 8 divisors (see below), whose sum is σ = 37449240. Its totient is φ = 24160320.
The previous prime is 30704033. The next prime is 30704059. The reversal of 30704045 is 54040703.
It can be written as a sum of positive squares in 4 ways, for example, as 2550409 + 28153636 = 1597^2 + 5306^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30704045 - 28 = 30703789 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30704045.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50030 + ... + 50639.
It is an arithmetic number, because the mean of its divisors is an integer number (4681155).
Almost surely, 230704045 is an apocalyptic number.
It is an amenable number.
30704045 is a deficient number, since it is larger than the sum of its proper divisors (6745195).
30704045 is a wasteful number, since it uses less digits than its factorization.
30704045 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 100735.
The product of its (nonzero) digits is 1680, while the sum is 23.
The square root of 30704045 is about 5541.1230811091. The cubic root of 30704045 is about 313.1351816669.
Adding to 30704045 its reverse (54040703), we get a palindrome (84744748).
The spelling of 30704045 in words is "thirty million, seven hundred four thousand, forty-five".
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