256746146 has 8 divisors (see below), whose sum is σ = 386263020. Its totient is φ = 127991808.

The previous prime is 256746137. The next prime is 256746167. The reversal of 256746146 is 641647652.

It is a happy number.

256746146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 247716121 + 9030025 = 15739^2 + 3005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189791 + ... + 191138.

Almost surely, 2^256746146 is an apocalyptic number.

256746146 is a deficient number, since it is larger than the sum of its proper divisors (129516874).

256746146 is a wasteful number, since it uses less digits than its factorization.

256746146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381268.

The product of its digits is 241920, while the sum is 41.

The square root of 256746146 is about 16023.3000970462. The cubic root of 256746146 is about 635.5767145768.

The spelling of 256746146 in words is "two hundred fifty-six million, seven hundred forty-six thousand, one hundred forty-six".