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426640045 = 5136563693
BaseRepresentation
bin11001011011100…
…000001010101101
31002201210120010011
4121123200022231
51333204440140
6110200213221
713400244346
oct3133401255
91081716104
10426640045
111a9910a87
12baa6a211
136a50b140
144093b0cd
15276c6cea
hex196e02ad

426640045 has 8 divisors (see below), whose sum is σ = 551350296. Its totient is φ = 315057216.

The previous prime is 426640043. The next prime is 426640051. The reversal of 426640045 is 540046624.

It can be written as a sum of positive squares in 4 ways, for example, as 93636 + 426546409 = 306^2 + 20653^2 .

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 426640045 - 21 = 426640043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 426639989 and 426640016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426640043) 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, 3281782 + ... + 3281911.

It is an arithmetic number, because the mean of its divisors is an integer number (68918787).

Almost surely, 2426640045 is an apocalyptic number.

It is an amenable number.

426640045 is a deficient number, since it is larger than the sum of its proper divisors (124710251).

426640045 is a wasteful number, since it uses less digits than its factorization.

426640045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563711.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 426640045 is about 20655.2667617729. The cubic root of 426640045 is about 752.8131653120.

Adding to 426640045 its reverse (540046624), we get a palindrome (966686669).

The spelling of 426640045 in words is "four hundred twenty-six million, six hundred forty thousand, forty-five".

Divisors: 1 5 13 65 6563693 32818465 85328009 426640045