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308486441 = 423172911
BaseRepresentation
bin10010011000110…
…010000100101001
3210111110201211202
4102120302010221
51112433031231
650335533545
710434043244
oct2230620451
9714421752
10308486441
1114915047a
128738a2b5
134bbac773
142cd8225b
151c1385cb
hex12632129

308486441 has 4 divisors (see below), whose sum is σ = 308563584. Its totient is φ = 308409300.

The previous prime is 308486411. The next prime is 308486443. The reversal of 308486441 is 144684803.

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 a de Polignac number, because none of the positive numbers 2k-308486441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308486395 and 308486404.

It is not an unprimeable number, because it can be changed into a prime (308486443) 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, 32225 + ... + 40686.

It is an arithmetic number, because the mean of its divisors is an integer number (77140896).

Almost surely, 2308486441 is an apocalyptic number.

It is an amenable number.

308486441 is a deficient number, since it is larger than the sum of its proper divisors (77143).

308486441 is an equidigital number, since it uses as much as digits as its factorization.

308486441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77142.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 308486441 is about 17563.7820813172. The cubic root of 308486441 is about 675.6866837266.

The spelling of 308486441 in words is "three hundred eight million, four hundred eighty-six thousand, four hundred forty-one".

Divisors: 1 4231 72911 308486441