256041030 has 64 divisors (see below), whose sum is σ = 704355840. Its totient is φ = 58351104.

The previous prime is 256041011. The next prime is 256041031. The reversal of 256041030 is 30140652.

It is a happy number.

256041030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 256040988 and 256041006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256041031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77982 + ... + 81198.

It is an arithmetic number, because the mean of its divisors is an integer number (11005560).

Almost surely, 2^256041030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256041030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352177920).

256041030 is an abundant number, since it is smaller than the sum of its proper divisors (448314810).

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

256041030 is a wasteful number, since it uses less digits than its factorization.

256041030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613.

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

The square root of 256041030 is about 16001.2821361290. The cubic root of 256041030 is about 634.9943414049.

Adding to 256041030 its reverse (30140652), we get a palindrome (286181682).

The spelling of 256041030 in words is "two hundred fifty-six million, forty-one thousand, thirty".