1256238 has 24 divisors (see below), whose sum is σ = 2752776. Its totient is φ = 414000.

The previous prime is 1256231. The next prime is 1256243. The reversal of 1256238 is 8326521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1473 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (114699).

2^1256238 is an apocalyptic number.

1256238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1256238 is an abundant number, since it is smaller than the sum of its proper divisors (1496538).

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

1256238 is a wasteful number, since it uses less digits than its factorization.

1256238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 797 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1256238 is about 1120.8202353634. The cubic root of 1256238 is about 107.9006287608.

The spelling of 1256238 in words is "one million, two hundred fifty-six thousand, two hundred thirty-eight".