20380259 has 2 divisors, whose sum is σ = 20380260. Its totient is φ = 20380258.

The previous prime is 20380253. The next prime is 20380267. The reversal of 20380259 is 95208302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20380259 - 2¹² = 20376163 is a prime.

It is not a weakly prime, because it can be changed into another prime (20380253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190129 + 10190130.

It is an arithmetic number, because the mean of its divisors is an integer number (10190130).

Almost surely, 2^20380259 is an apocalyptic number.

20380259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20380259 is an equidigital number, since it uses as much as digits as its factorization.

20380259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20380259 is about 4514.4500218742. The cubic root of 20380259 is about 273.1512755853.

The spelling of 20380259 in words is "twenty million, three hundred eighty thousand, two hundred fifty-nine".