2272729 has 2 divisors, whose sum is σ = 2272730. Its totient is φ = 2272728.

The previous prime is 2272727. The next prime is 2272733. The reversal of 2272729 is 9272722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 455625 = 1348^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2272729 - 2¹ = 2272727 is a prime.

Together with 2272727, 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 2272729.

It is not a weakly prime, because it can be changed into another prime (2272727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136364 + 1136365.

It is an arithmetic number, because the mean of its divisors is an integer number (1136365).

2^2272729 is an apocalyptic number.

It is an amenable number.

2272729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2272729 is an equidigital number, since it uses as much as digits as its factorization.

2272729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 2272729 is about 1507.5572957603. The cubic root of 2272729 is about 131.4768280239.

The spelling of 2272729 in words is "two million, two hundred seventy-two thousand, seven hundred twenty-nine".