2226729 has 4 divisors (see below), whose sum is σ = 2968976. Its totient is φ = 1484484.

The previous prime is 2226713. The next prime is 2226733. The reversal of 2226729 is 9276222.

2226729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2226729 - 2⁴ = 2226713 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2226696 and 2226705.

It is not an unprimeable number, because it can be changed into a prime (2226769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371119 + ... + 371124.

It is an arithmetic number, because the mean of its divisors is an integer number (742244).

2^2226729 is an apocalyptic number.

It is an amenable number.

2226729 is a deficient number, since it is larger than the sum of its proper divisors (742247).

2226729 is an equidigital number, since it uses as much as digits as its factorization.

2226729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742246.

The product of its digits is 6048, while the sum is 30.

The square root of 2226729 is about 1492.2228385868. Note that the first 3 decimals coincide. The cubic root of 2226729 is about 130.5837456622.

The spelling of 2226729 in words is "two million, two hundred twenty-six thousand, seven hundred twenty-nine".