1228727 has 4 divisors (see below), whose sum is σ = 1232616. Its totient is φ = 1224840.

The previous prime is 1228693. The next prime is 1228741. The reversal of 1228727 is 7278221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7278221 = 233 ⋅31237.

It is a cyclic number.

It is not a de Polignac number, because 1228727 - 2¹⁰ = 1227703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424 + ... + 2117.

It is an arithmetic number, because the mean of its divisors is an integer number (308154).

2^1228727 is an apocalyptic number.

1228727 is a deficient number, since it is larger than the sum of its proper divisors (3889).

1228727 is an equidigital number, since it uses as much as digits as its factorization.

1228727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its digits is 3136, while the sum is 29.

The square root of 1228727 is about 1108.4795893475. The cubic root of 1228727 is about 107.1071509379.

The spelling of 1228727 in words is "one million, two hundred twenty-eight thousand, seven hundred twenty-seven".