1228549 has 8 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 1047696.

The previous prime is 1228547. The next prime is 1228567. The reversal of 1228549 is 9458221.

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

It is a cyclic number.

It is not a de Polignac number, because 1228549 - 2¹ = 1228547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228541) 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 7 ways as a sum of consecutive naturals, for example, 1752 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (176400).

2^1228549 is an apocalyptic number.

It is an amenable number.

1228549 is a deficient number, since it is larger than the sum of its proper divisors (182651).

1228549 is an equidigital number, since it uses as much as digits as its factorization.

1228549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its digits is 5760, while the sum is 31.

The square root of 1228549 is about 1108.3992962827. The cubic root of 1228549 is about 107.1019786489.

It can be divided in two parts, 12 and 28549, that added together give a 4-th power (28561 = 13⁴).

The spelling of 1228549 in words is "one million, two hundred twenty-eight thousand, five hundred forty-nine".