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20433013 is a prime number
BaseRepresentation
bin100110111110…
…0100001110101
31102110002211021
41031330201311
520212324023
62005541141
7335451316
oct115744165
942402737
1020433013
1110596697
126a147b1
134305553
1429dc60d
151bd935d
hex137c875

20433013 has 2 divisors, whose sum is σ = 20433014. Its totient is φ = 20433012.

The previous prime is 20432981. The next prime is 20433043. The reversal of 20433013 is 31033402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18852964 + 1580049 = 4342^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 20433013 - 25 = 20432981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20433043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216506 + 10216507.

It is an arithmetic number, because the mean of its divisors is an integer number (10216507).

Almost surely, 220433013 is an apocalyptic number.

It is an amenable number.

20433013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433013 is an equidigital number, since it uses as much as digits as its factorization.

20433013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20433013 is about 4520.2890394310. The cubic root of 20433013 is about 273.3867552070.

Adding to 20433013 its reverse (31033402), we get a palindrome (51466415).

The spelling of 20433013 in words is "twenty million, four hundred thirty-three thousand, thirteen".