2273729 has 2 divisors, whose sum is σ = 2273730. Its totient is φ = 2273728.

The previous prime is 2273701. The next prime is 2273743. The reversal of 2273729 is 9273722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 142129 = 1460^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273729 - 2¹² = 2269633 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2273695 and 2273704.

It is not a weakly prime, because it can be changed into another prime (2273759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136864 + 1136865.

It is an arithmetic number, because the mean of its divisors is an integer number (1136865).

2^2273729 is an apocalyptic number.

It is an amenable number.

2273729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2273729 is an equidigital number, since it uses as much as digits as its factorization.

2273729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 32.

The square root of 2273729 is about 1507.8889216385. Note that the first 3 decimals coincide. The cubic root of 2273729 is about 131.4961084498.

The spelling of 2273729 in words is "two million, two hundred seventy-three thousand, seven hundred twenty-nine".