1247056 has 20 divisors (see below), whose sum is σ = 2476404. Its totient is φ = 608000.

The previous prime is 1247053. The next prime is 1247063. The reversal of 1247056 is 6507421.

1247056 = 154² + 155² + ... + 194².

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 1166400 = 284^2 + 1080^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1247056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295 + ... + 1606.

2^1247056 is an apocalyptic number.

1247056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1247056 is a deficient number, since it is larger than the sum of its proper divisors (1229348).

1247056 is a wasteful number, since it uses less digits than its factorization.

1247056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950 (or 1944 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1247056 is about 1116.7166157983. The cubic root of 1247056 is about 107.6370992795.

The spelling of 1247056 in words is "one million, two hundred forty-seven thousand, fifty-six".