256052280 has 64 divisors (see below), whose sum is σ = 837993600. Its totient is φ = 62072960.

The previous prime is 256052273. The next prime is 256052311. The reversal of 256052280 is 82250652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95670 + ... + 98309.

It is an arithmetic number, because the mean of its divisors is an integer number (13093650).

Almost surely, 2^256052280 is an apocalyptic number.

256052280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256052280 is an abundant number, since it is smaller than the sum of its proper divisors (581941320).

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

256052280 is a wasteful number, since it uses less digits than its factorization.

256052280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194004 (or 194000 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 256052280 is about 16001.6336665979. The cubic root of 256052280 is about 635.0036414531.

The spelling of 256052280 in words is "two hundred fifty-six million, fifty-two thousand, two hundred eighty".