1256798 has 4 divisors (see below), whose sum is σ = 1885200. Its totient is φ = 628398.

The previous prime is 1256797. The next prime is 1256809. The reversal of 1256798 is 8976521.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314198 + ... + 314201.

It is an arithmetic number, because the mean of its divisors is an integer number (471300).

2^1256798 is an apocalyptic number.

1256798 is a deficient number, since it is larger than the sum of its proper divisors (628402).

1256798 is an equidigital number, since it uses as much as digits as its factorization.

1256798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628401.

The product of its digits is 30240, while the sum is 38.

The square root of 1256798 is about 1121.0700245747. The cubic root of 1256798 is about 107.9166595277.

The spelling of 1256798 in words is "one million, two hundred fifty-six thousand, seven hundred ninety-eight".