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20321269 is a prime number
BaseRepresentation
bin100110110000…
…1001111110101
31102020102112121
41031201033311
520200240034
62003315541
7334504453
oct115411765
942212477
1020321269
111051a741
12697bbb1
134296727
1429ad9d3
151bb61b4
hex13613f5

20321269 has 2 divisors, whose sum is σ = 20321270. Its totient is φ = 20321268.

The previous prime is 20321263. The next prime is 20321293. The reversal of 20321269 is 96212302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 26244 = 4505^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321269 - 23 = 20321261 is a prime.

It is a super-2 number, since 2×203212692 = 825907947540722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20321261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160634 + 10160635.

It is an arithmetic number, because the mean of its divisors is an integer number (10160635).

Almost surely, 220321269 is an apocalyptic number.

It is an amenable number.

20321269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321269 is an equidigital number, since it uses as much as digits as its factorization.

20321269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20321269 is about 4507.9118225626. The cubic root of 20321269 is about 272.8874783953.

The spelling of 20321269 in words is "twenty million, three hundred twenty-one thousand, two hundred sixty-nine".