1230256 has 20 divisors (see below), whose sum is σ = 2524392. Its totient is φ = 578816.

The previous prime is 1230241. The next prime is 1230263. The reversal of 1230256 is 6520321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990 + ... + 2533.

2^1230256 is an apocalyptic number.

1230256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1230256 is the 702-nd centered pentagonal number.

It is an amenable number.

1230256 is an abundant number, since it is smaller than the sum of its proper divisors (1294136).

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

1230256 is a wasteful number, since it uses less digits than its factorization.

1230256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1230256 is about 1109.1690583495. The cubic root of 1230256 is about 107.1515597587.

Adding to 1230256 its reverse (6520321), we get a palindrome (7750577).

The spelling of 1230256 in words is "one million, two hundred thirty thousand, two hundred fifty-six".