256324020 has 48 divisors (see below), whose sum is σ = 722137920. Its totient is φ = 67931136.

The previous prime is 256324007. The next prime is 256324021. The reversal of 256324020 is 20423652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256324021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3325 + ... + 22884.

It is an arithmetic number, because the mean of its divisors is an integer number (15044540).

Almost surely, 2^256324020 is an apocalyptic number.

256324020 is a gapful number since it is divisible by the number (20) 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 256324020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361068960).

256324020 is an abundant number, since it is smaller than the sum of its proper divisors (465813900).

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

256324020 is a wasteful number, since it uses less digits than its factorization.

256324020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26384 (or 26382 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 256324020 is about 16010.1224230173. The cubic root of 256324020 is about 635.2281983064.

Adding to 256324020 its reverse (20423652), we get a palindrome (276747672).

The spelling of 256324020 in words is "two hundred fifty-six million, three hundred twenty-four thousand, twenty".