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20313044 = 225078261
BaseRepresentation
bin100110101111…
…1001111010100
31102020000020222
41031133033110
520200004134
62003213512
7334441463
oct115371724
942200228
1020313044
1110514544
126977298
134292a6b
1429aa9da
151bb3a2e
hex135f3d4

20313044 has 6 divisors (see below), whose sum is σ = 35547834. Its totient is φ = 10156520.

The previous prime is 20313001. The next prime is 20313047. The reversal of 20313044 is 44031302.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 7496644 = 3580^2 + 2738^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539127 + ... + 2539134.

It is an arithmetic number, because the mean of its divisors is an integer number (5924639).

Almost surely, 220313044 is an apocalyptic number.

It is an amenable number.

20313044 is a deficient number, since it is larger than the sum of its proper divisors (15234790).

20313044 is a wasteful number, since it uses less digits than its factorization.

20313044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078265 (or 5078263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20313044 is about 4506.9994453073. Note that the first 3 decimals coincide. The cubic root of 20313044 is about 272.8506565086.

Adding to 20313044 its reverse (44031302), we get a palindrome (64344346).

The spelling of 20313044 in words is "twenty million, three hundred thirteen thousand, forty-four".

Divisors: 1 2 4 5078261 10156522 20313044