1556256 has 96 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 451584.

The previous prime is 1556251. The next prime is 1556263. The reversal of 1556256 is 6526551.

It is a tau number, because it is divible by the number of its divisors (96).

Its product of digits (9000) is a multiple of the sum of its prime divisors (90).

It is not an unprimeable number, because it can be changed into a prime (1556251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36171 + ... + 36213.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2^1556256 is an apocalyptic number.

1556256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is a pronic number, being equal to 1247×1248.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1556256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328480).

1556256 is an abundant number, since it is smaller than the sum of its proper divisors (3100704).

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

1556256 is a wasteful number, since it uses less digits than its factorization.

1556256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 90 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1556256 is about 1247.4998997996. The cubic root of 1556256 is about 115.8849433881.

The spelling of 1556256 in words is "one million, five hundred fifty-six thousand, two hundred fifty-six".