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20727037 is a prime number
BaseRepresentation
bin100111100010…
…0010011111101
31110000001011001
41033010103331
520301231122
62020130301
7341114452
oct117042375
943001131
1020727037
1110777591
126b36991
1343a9326
142a77829
151c46527
hex13c44fd

20727037 has 2 divisors, whose sum is σ = 20727038. Its totient is φ = 20727036.

The previous prime is 20727023. The next prime is 20727061. The reversal of 20727037 is 73072702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 2842596 = 4229^2 + 1686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20727037 is a prime.

It is a super-2 number, since 2×207270372 = 859220125598738, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20726996 and 20727014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20727137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363518 + 10363519.

It is an arithmetic number, because the mean of its divisors is an integer number (10363519).

Almost surely, 220727037 is an apocalyptic number.

20727037 is the 2629-th hex number.

It is an amenable number.

20727037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727037 is an equidigital number, since it uses as much as digits as its factorization.

20727037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 20727037 is about 4552.6955751511. The cubic root of 20727037 is about 274.6918288903.

Adding to 20727037 its reverse (73072702), we get a palindrome (93799739).

The spelling of 20727037 in words is "twenty million, seven hundred twenty-seven thousand, thirty-seven".