1226729 has 8 divisors (see below), whose sum is σ = 1450560. Its totient is φ = 1015056.

The previous prime is 1226713. The next prime is 1226741. The reversal of 1226729 is 9276221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226729 - 2⁴ = 1226713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a d-powerful number, because it can be written as 1 + 2¹⁷ + 2¹⁹ + 6⁶ + 7³ + 2¹⁹ + 9² .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1226779) 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 in 7 ways as a sum of consecutive naturals, for example, 2819 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (181320).

2^1226729 is an apocalyptic number.

It is an amenable number.

1226729 is a deficient number, since it is larger than the sum of its proper divisors (223831).

1226729 is an equidigital number, since it uses as much as digits as its factorization.

1226729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6079.

The product of its digits is 3024, while the sum is 29.

The square root of 1226729 is about 1107.5779882248. The cubic root of 1226729 is about 107.0490647545.

The spelling of 1226729 in words is "one million, two hundred twenty-six thousand, seven hundred twenty-nine".