1220446 has 8 divisors (see below), whose sum is σ = 1927080. Its totient is φ = 578088.

The previous prime is 1220437. The next prime is 1220489. The reversal of 1220446 is 6440221.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16021 + ... + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (240885).

2^1220446 is an apocalyptic number.

1220446 is a deficient number, since it is larger than the sum of its proper divisors (706634).

1220446 is a wasteful number, since it uses less digits than its factorization.

1220446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32138.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1220446 is about 1104.7379779839. The cubic root of 1220446 is about 106.8659923099.

Adding to 1220446 its reverse (6440221), we get a palindrome (7660667).

The spelling of 1220446 in words is "one million, two hundred twenty thousand, four hundred forty-six".