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1284670313 = 19232939749
BaseRepresentation
bin100110010010010…
…1000001101101001
310022112100000100222
41030210220031221
510112333422223
6331250535425
743556342333
oct11444501551
93275300328
101284670313
115aa187903
122ba297575
131761cb564
14c2890453
1577bb30c8
hex4c928369

1284670313 has 8 divisors (see below), whose sum is σ = 1411080000. Its totient is φ = 1164140208.

The previous prime is 1284670253. The next prime is 1284670327. The reversal of 1284670313 is 3130764821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1284670313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284670213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469438 + ... + 1470311.

It is an arithmetic number, because the mean of its divisors is an integer number (176385000).

Almost surely, 21284670313 is an apocalyptic number.

It is an amenable number.

1284670313 is a deficient number, since it is larger than the sum of its proper divisors (126409687).

1284670313 is a wasteful number, since it uses less digits than its factorization.

1284670313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939791.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1284670313 is about 35842.2978197548. The cubic root of 1284670313 is about 1087.0859833804.

The spelling of 1284670313 in words is "one billion, two hundred eighty-four million, six hundred seventy thousand, three hundred thirteen".

Divisors: 1 19 23 437 2939749 55855231 67614227 1284670313