20378273 has 2 divisors, whose sum is σ = 20378274. Its totient is φ = 20378272.

The previous prime is 20378249. The next prime is 20378297. The reversal of 20378273 is 37287302.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20378249) and next prime (20378297).

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 2930944 = 4177^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 20378273 - 2¹⁴ = 20361889 is a prime.

It is not a weakly prime, because it can be changed into another prime (20378233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10189136 + 10189137.

It is an arithmetic number, because the mean of its divisors is an integer number (10189137).

Almost surely, 2^20378273 is an apocalyptic number.

It is an amenable number.

20378273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20378273 is an equidigital number, since it uses as much as digits as its factorization.

20378273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20378273 is about 4514.2300561668. The cubic root of 20378273 is about 273.1424026844.

The spelling of 20378273 in words is "twenty million, three hundred seventy-eight thousand, two hundred seventy-three".