1228481 has 4 divisors (see below), whose sum is σ = 1240512. Its totient is φ = 1216452.

The previous prime is 1228459. The next prime is 1228489. The reversal of 1228481 is 1848221.

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 a cyclic number.

It is not a de Polignac number, because 1228481 - 2¹⁸ = 966337 is a prime.

It is a super-2 number, since 2×1228481² = 3018331134722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228481.

It is not an unprimeable number, because it can be changed into a prime (1228489) 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, 5861 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (310128).

2^1228481 is an apocalyptic number.

It is an amenable number.

1228481 is a deficient number, since it is larger than the sum of its proper divisors (12031).

1228481 is a wasteful number, since it uses less digits than its factorization.

1228481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12030.

The product of its digits is 1024, while the sum is 26.

The square root of 1228481 is about 1108.3686209921. The cubic root of 1228481 is about 107.1000025864.

The spelling of 1228481 in words is "one million, two hundred twenty-eight thousand, four hundred eighty-one".