256160720 has 40 divisors (see below), whose sum is σ = 596318976. Its totient is φ = 102336128.

The previous prime is 256160701. The next prime is 256160753. The reversal of 256160720 is 27061652.

256160720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86789 + ... + 89691.

Almost surely, 2^256160720 is an apocalyptic number.

256160720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256160720 is an abundant number, since it is smaller than the sum of its proper divisors (340158256).

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

256160720 is a wasteful number, since it uses less digits than its factorization.

256160720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019 (or 4013 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 256160720 is about 16005.0217119503. The cubic root of 256160720 is about 635.0932716857.

The spelling of 256160720 in words is "two hundred fifty-six million, one hundred sixty thousand, seven hundred twenty".