256116080 has 40 divisors (see below), whose sum is σ = 649605744. Its totient is φ = 93132800.

The previous prime is 256116059. The next prime is 256116089. The reversal of 256116080 is 80611652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256116089) 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, 144641 + ... + 146400.

Almost surely, 2^256116080 is an apocalyptic number.

256116080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256116080 is an abundant number, since it is smaller than the sum of its proper divisors (393489664).

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

256116080 is a wasteful number, since it uses less digits than its factorization.

256116080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291065 (or 291059 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 256116080 is about 16003.6270888821. The cubic root of 256116080 is about 635.0563779072.

The spelling of 256116080 in words is "two hundred fifty-six million, one hundred sixteen thousand, eighty".