Base | Representation |
---|---|
bin | 1000010000110… |
… | …10101101001001 |
3 | 11211102120212002 |
4 | 10020122231021 |
5 | 120221043101 |
6 | 10513400345 |
7 | 1501112501 |
oct | 410325511 |
9 | 154376762 |
10 | 69315401 |
11 | 36143761 |
12 | 1b2690b5 |
13 | 1148c03c |
14 | 92c4a01 |
15 | 6142d6b |
hex | 421ab49 |
69315401 has 4 divisors (see below), whose sum is σ = 72963600. Its totient is φ = 65667204.
The previous prime is 69315397. The next prime is 69315419. The reversal of 69315401 is 10451396.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 69315401 - 22 = 69315397 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (69315451) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824071 + ... + 1824108.
It is an arithmetic number, because the mean of its divisors is an integer number (18240900).
Almost surely, 269315401 is an apocalyptic number.
It is an amenable number.
69315401 is a deficient number, since it is larger than the sum of its proper divisors (3648199).
69315401 is a wasteful number, since it uses less digits than its factorization.
69315401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3648198.
The product of its (nonzero) digits is 3240, while the sum is 29.
The square root of 69315401 is about 8325.5871264434. The cubic root of 69315401 is about 410.7805890574.
Adding to 69315401 its reverse (10451396), we get a palindrome (79766797).
The spelling of 69315401 in words is "sixty-nine million, three hundred fifteen thousand, four hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •