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1268025013 = 10920635639
BaseRepresentation
bin100101110010100…
…1000011010110101
310021101000100022101
41023211020122311
510044103300023
6325454102101
743265014633
oct11345103265
93241010271
101268025013
115a0848a62
122b47aa931
13172921078
14c059a353
15764c61ad
hex4b9486b5

1268025013 has 8 divisors (see below), whose sum is σ = 1280505600. Its totient is φ = 1255560048.

The previous prime is 1268024993. The next prime is 1268025047. The reversal of 1268025013 is 3105208621.

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 1268025013 - 25 = 1268024981 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 (1262025013) 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, 222048 + ... + 227686.

It is an arithmetic number, because the mean of its divisors is an integer number (160063200).

Almost surely, 21268025013 is an apocalyptic number.

It is an amenable number.

1268025013 is a deficient number, since it is larger than the sum of its proper divisors (12480587).

1268025013 is a wasteful number, since it uses less digits than its factorization.

1268025013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1268025013 is about 35609.3388453085. The cubic root of 1268025013 is about 1082.3704828269.

The spelling of 1268025013 in words is "one billion, two hundred sixty-eight million, twenty-five thousand, thirteen".

Divisors: 1 109 2063 5639 224867 614651 11633257 1268025013