1556456 has 32 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 675840.

The previous prime is 1556453. The next prime is 1556473. The reversal of 1556456 is 6546551.

It is not an unprimeable number, because it can be changed into a prime (1556453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2^1556456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1556456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663200).

1556456 is an abundant number, since it is smaller than the sum of its proper divisors (1769944).

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

1556456 is a wasteful number, since it uses less digits than its factorization.

1556456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 805 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 1556456 is about 1247.5800575514. The cubic root of 1556456 is about 115.8899074377.

The spelling of 1556456 in words is "one million, five hundred fifty-six thousand, four hundred fifty-six".