256207116 has 48 divisors (see below), whose sum is σ = 658183680. Its totient is φ = 76921920.

The previous prime is 256207109. The next prime is 256207117. The reversal of 256207116 is 611702652.

It is not an unprimeable number, because it can be changed into a prime (256207117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5485 + ... + 23291.

It is an arithmetic number, because the mean of its divisors is an integer number (13712160).

Almost surely, 2^256207116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256207116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329091840).

256207116 is an abundant number, since it is smaller than the sum of its proper divisors (401976564).

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

256207116 is a wasteful number, since it uses less digits than its factorization.

256207116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17934 (or 17932 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 256207116 is about 16006.4710664156. The cubic root of 256207116 is about 635.1316122097.

Adding to 256207116 its reverse (611702652), we get a palindrome (867909768).

The spelling of 256207116 in words is "two hundred fifty-six million, two hundred seven thousand, one hundred sixteen".