1221486 has 32 divisors (see below), whose sum is σ = 2826240. Its totient is φ = 344736.

The previous prime is 1221469. The next prime is 1221499. The reversal of 1221486 is 6841221.

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, 5220 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (88320).

2^1221486 is an apocalyptic number.

1221486 is an abundant number, since it is smaller than the sum of its proper divisors (1604754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221486 is a wasteful number, since it uses less digits than its factorization.

1221486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its digits is 768, while the sum is 24.

The square root of 1221486 is about 1105.2085775997. The cubic root of 1221486 is about 106.8963388875.

The spelling of 1221486 in words is "one million, two hundred twenty-one thousand, four hundred eighty-six".