20010269 has 2 divisors, whose sum is σ = 20010270. Its totient is φ = 20010268.

The previous prime is 20010259. The next prime is 20010271. The reversal of 20010269 is 96201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 7086244 = 3595^2 + 2662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010269 - 2²⁰ = 18961693 is a prime.

It is a super-2 number, since 2×20010269² = 800821730904722, which contains 22 as substring.

Together with 20010271, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005134 + 10005135.

It is an arithmetic number, because the mean of its divisors is an integer number (10005135).

Almost surely, 2^20010269 is an apocalyptic number.

It is an amenable number.

20010269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010269 is an equidigital number, since it uses as much as digits as its factorization.

20010269 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 20.

The square root of 20010269 is about 4473.2839167663. The cubic root of 20010269 is about 271.4882109681.

The spelling of 20010269 in words is "twenty million, ten thousand, two hundred sixty-nine".