256960860 has 96 divisors (see below), whose sum is σ = 799905792. Its totient is φ = 61205760.

The previous prime is 256960841. The next prime is 256960877. The reversal of 256960860 is 68069652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18867 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (8332352).

Almost surely, 2^256960860 is an apocalyptic number.

256960860 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 256960860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399952896).

256960860 is an abundant number, since it is smaller than the sum of its proper divisors (542944932).

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

256960860 is a wasteful number, since it uses less digits than its factorization.

256960860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10681 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 256960860 is about 16029.9987523393. The cubic root of 256960860 is about 635.7538405000.

The spelling of 256960860 in words is "two hundred fifty-six million, nine hundred sixty thousand, eight hundred sixty".