1228045 has 16 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 777024.

The previous prime is 1228021. The next prime is 1228091. The reversal of 1228045 is 5408221.

It is a cyclic number.

It is not a de Polignac number, because 1228045 - 2⁵ = 1228013 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 895 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^1228045 is an apocalyptic number.

It is an amenable number.

1228045 is a deficient number, since it is larger than the sum of its proper divisors (586355).

1228045 is a wasteful number, since it uses less digits than its factorization.

1228045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1228045 is about 1108.1719180705. The cubic root of 1228045 is about 107.0873308054.

The spelling of 1228045 in words is "one million, two hundred twenty-eight thousand, forty-five".