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20343044 = 2237137453
BaseRepresentation
bin100110110011…
…0100100000100
31102021112102002
41031212210010
520201434134
62004004432
7334625111
oct115464404
942245362
1020343044
1110535037
126990718
1342a3607
1429b7908
151bbc87e
hex1366904

20343044 has 12 divisors (see below), whose sum is σ = 36562764. Its totient is φ = 9896544.

The previous prime is 20343031. The next prime is 20343049. The reversal of 20343044 is 44034302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 8008900 = 3512^2 + 2830^2 .

It is not an unprimeable number, because it can be changed into a prime (20343049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68579 + ... + 68874.

It is an arithmetic number, because the mean of its divisors is an integer number (3046897).

Almost surely, 220343044 is an apocalyptic number.

It is an amenable number.

20343044 is a deficient number, since it is larger than the sum of its proper divisors (16219720).

20343044 is a wasteful number, since it uses less digits than its factorization.

20343044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137494 (or 137492 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20343044 is about 4510.3263740000. The cubic root of 20343044 is about 272.9849133160.

Adding to 20343044 its reverse (44034302), we get a palindrome (64377346).

The spelling of 20343044 in words is "twenty million, three hundred forty-three thousand, forty-four".

Divisors: 1 2 4 37 74 148 137453 274906 549812 5085761 10171522 20343044