256035340 has 48 divisors (see below), whose sum is σ = 592300800. Its totient is φ = 92191680.

The previous prime is 256035331. The next prime is 256035371. The reversal of 256035340 is 43530652.

It is a junction number, because it is equal to n+sod(n) for n = 256035299 and 256035308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17011 + ... + 28309.

It is an arithmetic number, because the mean of its divisors is an integer number (12339600).

Almost surely, 2^256035340 is an apocalyptic number.

256035340 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 256035340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296150400).

256035340 is an abundant number, since it is smaller than the sum of its proper divisors (336265460).

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

256035340 is a wasteful number, since it uses less digits than its factorization.

256035340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11422 (or 11420 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 256035340 is about 16001.1043368888. The cubic root of 256035340 is about 634.9896375435.

Adding to 256035340 its reverse (43530652), we get a palindrome (299565992).

The spelling of 256035340 in words is "two hundred fifty-six million, thirty-five thousand, three hundred forty".