256533346 has 4 divisors (see below), whose sum is σ = 384800022. Its totient is φ = 128266672.

The previous prime is 256533341. The next prime is 256533371. The reversal of 256533346 is 643335652.

256533346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 256160025 + 373321 = 16005^2 + 611^2 .

It is not an unprimeable number, because it can be changed into a prime (256533341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64133335 + ... + 64133338.

Almost surely, 2^256533346 is an apocalyptic number.

256533346 is a deficient number, since it is larger than the sum of its proper divisors (128266676).

256533346 is a wasteful number, since it uses less digits than its factorization.

256533346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128266675.

The product of its digits is 194400, while the sum is 37.

The square root of 256533346 is about 16016.6583905632. The cubic root of 256533346 is about 635.4010701242.

Adding to 256533346 its reverse (643335652), we get a palindrome (899868998).

The spelling of 256533346 in words is "two hundred fifty-six million, five hundred thirty-three thousand, three hundred forty-six".