256275700 has 72 divisors (see below), whose sum is σ = 575400672. Its totient is φ = 99012480.

The previous prime is 256275689. The next prime is 256275779. The reversal of 256275700 is 7572652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459822 + ... + 460378.

It is an arithmetic number, because the mean of its divisors is an integer number (7991676).

Almost surely, 2^256275700 is an apocalyptic number.

256275700 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 256275700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287700336).

256275700 is an abundant number, since it is smaller than the sum of its proper divisors (319124972).

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

256275700 is a wasteful number, since it uses less digits than its factorization.

256275700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 256275700 is about 16008.6133065922. The cubic root of 256275700 is about 635.1882798788.

The spelling of 256275700 in words is "two hundred fifty-six million, two hundred seventy-five thousand, seven hundred".