Base | Representation |
---|---|
bin | 110010010001… |
… | …110010010001 |
3 | 220210121121222 |
4 | 302101302101 |
5 | 11333230144 |
6 | 1150254425 |
7 | 220012541 |
oct | 62216221 |
9 | 26717558 |
10 | 13180049 |
11 | 7492403 |
12 | 44b7415 |
13 | 296615c |
14 | 1a71321 |
15 | 12552ee |
hex | c91c91 |
13180049 has 8 divisors (see below), whose sum is σ = 14017608. Its totient is φ = 12349440.
The previous prime is 13180043. The next prime is 13180051. The reversal of 13180049 is 94008131.
It can be written as a sum of positive squares in 4 ways, for example, as 8162449 + 5017600 = 2857^2 + 2240^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13180049 - 24 = 13180033 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13180043) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489 + ... + 5705.
It is an arithmetic number, because the mean of its divisors is an integer number (1752201).
Almost surely, 213180049 is an apocalyptic number.
It is an amenable number.
13180049 is a deficient number, since it is larger than the sum of its proper divisors (837559).
13180049 is a wasteful number, since it uses less digits than its factorization.
13180049 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3475.
The product of its (nonzero) digits is 864, while the sum is 26.
The square root of 13180049 is about 3630.4337206455. The cubic root of 13180049 is about 236.2140223108.
The spelling of 13180049 in words is "thirteen million, one hundred eighty thousand, forty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •