Base | Representation |
---|---|
bin | 11111001010000… |
… | …11100010001111 |
3 | 200012211002001012 |
4 | 33211003202033 |
5 | 1013402401142 |
6 | 41534035435 |
7 | 6322424426 |
oct | 1745034217 |
9 | 605732035 |
10 | 261372047 |
11 | 1245a0762 |
12 | 73648b7b |
13 | 421c4921 |
14 | 269da2bd |
15 | 17e2d882 |
hex | f94388f |
261372047 has 8 divisors (see below), whose sum is σ = 265234944. Its totient is φ = 257516928.
The previous prime is 261372043. The next prime is 261372049. The reversal of 261372047 is 740273162.
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 261372047 - 22 = 261372043 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (261372043) 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, 120323 + ... + 122475.
It is an arithmetic number, because the mean of its divisors is an integer number (33154368).
Almost surely, 2261372047 is an apocalyptic number.
261372047 is a deficient number, since it is larger than the sum of its proper divisors (3862897).
261372047 is a wasteful number, since it uses less digits than its factorization.
261372047 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3889.
The product of its (nonzero) digits is 14112, while the sum is 32.
The square root of 261372047 is about 16167.0048864964. The cubic root of 261372047 is about 639.3711653787.
The spelling of 261372047 in words is "two hundred sixty-one million, three hundred seventy-two thousand, forty-seven".
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