1564256 has 12 divisors (see below), whose sum is σ = 3079692. Its totient is φ = 782112.

The previous prime is 1564243. The next prime is 1564307. The reversal of 1564256 is 6524651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24410 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (256641).

2^1564256 is an apocalyptic number.

1564256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1564256 is a deficient number, since it is larger than the sum of its proper divisors (1515436).

1564256 is an equidigital number, since it uses as much as digits as its factorization.

1564256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48893 (or 48885 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 1564256 is about 1250.7022027645. The cubic root of 1564256 is about 116.0831745927.

The spelling of 1564256 in words is "one million, five hundred sixty-four thousand, two hundred fifty-six".