256000016 has 40 divisors (see below), whose sum is σ = 503520600. Its totient is φ = 126074880.

The previous prime is 256000009. The next prime is 256000033. The reversal of 256000016 is 610000652.

It can be written as a sum of positive squares in 4 ways, for example, as 178489600 + 77510416 = 13360^2 + 8804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399056 + ... + 399696.

It is an arithmetic number, because the mean of its divisors is an integer number (12588015).

Almost surely, 2^256000016 is an apocalyptic number.

It is an amenable number.

256000016 is a deficient number, since it is larger than the sum of its proper divisors (247520584).

256000016 is a wasteful number, since it uses less digits than its factorization.

256000016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 256000016 is about 16000.0005000000. Note that the first 3 decimals coincide. The cubic root of 256000016 is about 634.9604340156.

Adding to 256000016 its reverse (610000652), we get a palindrome (866000668).

It can be divided in two parts, 2560000 and 16, that multiplied together give a 4-th power (40960000 = 80⁴).

The spelling of 256000016 in words is "two hundred fifty-six million, sixteen", and thus it is an aban number.