256168148 has 6 divisors (see below), whose sum is σ = 448294266. Its totient is φ = 128084072.

The previous prime is 256168139. The next prime is 256168163. The reversal of 256168148 is 841861652.

It can be written as a sum of positive squares in only one way, i.e., 236790544 + 19377604 = 15388^2 + 4402^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32021015 + ... + 32021022.

It is an arithmetic number, because the mean of its divisors is an integer number (74715711).

Almost surely, 2^256168148 is an apocalyptic number.

It is an amenable number.

256168148 is a deficient number, since it is larger than the sum of its proper divisors (192126118).

256168148 is a wasteful number, since it uses less digits than its factorization.

256168148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64042041 (or 64042039 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 256168148 is about 16005.2537624369. The cubic root of 256168148 is about 635.0994103152.

The spelling of 256168148 in words is "two hundred fifty-six million, one hundred sixty-eight thousand, one hundred forty-eight".