256284497346 has 16 divisors (see below), whose sum is σ = 512574809664. Its totient is φ = 85427196624.

The previous prime is 256284497333. The next prime is 256284497353. The reversal of 256284497346 is 643794482652.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 256284497346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510651 + ... + 879393.

It is an arithmetic number, because the mean of its divisors is an integer number (32035925604).

Almost surely, 2^256284497346 is an apocalyptic number.

256284497346 is an abundant number, since it is smaller than the sum of its proper divisors (256290312318).

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

256284497346 is a wasteful number, since it uses less digits than its factorization.

256284497346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484585.

The product of its digits is 69672960, while the sum is 60.

The spelling of 256284497346 in words is "two hundred fifty-six billion, two hundred eighty-four million, four hundred ninety-seven thousand, three hundred forty-six".