1430256 has 40 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 469696.

The previous prime is 1430243. The next prime is 1430279. The reversal of 1430256 is 6520341.

It is a happy number.

It is a super-3 number, since 3×1430256³ = 8777333293098651648, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3805 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (93744).

2^1430256 is an apocalyptic number.

1430256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1430256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880).

1430256 is an abundant number, since it is smaller than the sum of its proper divisors (2319504).

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

1430256 is a wasteful number, since it uses less digits than its factorization.

1430256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1430256 is about 1195.9331084973. The cubic root of 1430256 is about 112.6690397051.

Adding to 1430256 its reverse (6520341), we get a palindrome (7950597).

The spelling of 1430256 in words is "one million, four hundred thirty thousand, two hundred fifty-six".