256344132 has 24 divisors (see below), whose sum is σ = 652512672. Its totient is φ = 77680000.

The previous prime is 256344047. The next prime is 256344133. The reversal of 256344132 is 231443652.

256344132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256344132.

It is not an unprimeable number, because it can be changed into a prime (256344133) 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 7 ways as a sum of consecutive naturals, for example, 970869 + ... + 971132.

It is an arithmetic number, because the mean of its divisors is an integer number (27188028).

Almost surely, 2^256344132 is an apocalyptic number.

256344132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256344132 is an abundant number, since it is smaller than the sum of its proper divisors (396168540).

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

256344132 is a wasteful number, since it uses less digits than its factorization.

256344132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942019 (or 1942017 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 256344132 is about 16010.7505133270. The cubic root of 256344132 is about 635.2448118819.

Adding to 256344132 its reverse (231443652), we get a palindrome (487787784).

The spelling of 256344132 in words is "two hundred fifty-six million, three hundred forty-four thousand, one hundred thirty-two".