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40010705 = 572163309
BaseRepresentation
bin1001100010100…
…0001111010001
32210021202100222
42120220033101
540220320310
63545322425
7664041200
oct230501721
983252328
1040010705
11206486a9
1211496415
13839b697
145457237
1537a5055
hex26283d1

40010705 has 12 divisors (see below), whose sum is σ = 55852020. Its totient is φ = 27435744.

The previous prime is 40010699. The next prime is 40010717. The reversal of 40010705 is 50701004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29506624 + 10504081 = 5432^2 + 3241^2 .

It is not a de Polignac number, because 40010705 - 210 = 40009681 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 81410 + ... + 81899.

It is an arithmetic number, because the mean of its divisors is an integer number (4654335).

Almost surely, 240010705 is an apocalyptic number.

It is an amenable number.

40010705 is a deficient number, since it is larger than the sum of its proper divisors (15841315).

40010705 is a wasteful number, since it uses less digits than its factorization.

40010705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163328 (or 163321 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 40010705 is about 6325.4015682801. The cubic root of 40010705 is about 342.0256954350.

Adding to 40010705 its reverse (50701004), we get a palindrome (90711709).

The spelling of 40010705 in words is "forty million, ten thousand, seven hundred five".

Divisors: 1 5 7 35 49 245 163309 816545 1143163 5715815 8002141 40010705