256530476 has 24 divisors (see below), whose sum is σ = 500356080. Its totient is φ = 114365952.

The previous prime is 256530473. The next prime is 256530499. The reversal of 256530476 is 674035652.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (256530473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97985 + ... + 100568.

It is an arithmetic number, because the mean of its divisors is an integer number (20848170).

Almost surely, 2^256530476 is an apocalyptic number.

It is an amenable number.

256530476 is a deficient number, since it is larger than the sum of its proper divisors (243825604).

256530476 is a wasteful number, since it uses less digits than its factorization.

256530476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198593 (or 198591 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 256530476 is about 16016.5687960936. The cubic root of 256530476 is about 635.3987005714.

The spelling of 256530476 in words is "two hundred fifty-six million, five hundred thirty thousand, four hundred seventy-six".