256046984 has 8 divisors (see below), whose sum is σ = 480088110. Its totient is φ = 128023488.

The previous prime is 256046981. The next prime is 256047031. The reversal of 256046984 is 489640652.

It can be written as a sum of positive squares in only one way, i.e., 221354884 + 34692100 = 14878^2 + 5890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (256046981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16002929 + ... + 16002944.

Almost surely, 2^256046984 is an apocalyptic number.

It is an amenable number.

256046984 is a deficient number, since it is larger than the sum of its proper divisors (224041126).

256046984 is a wasteful number, since it uses less digits than its factorization.

256046984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32005879 (or 32005875 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 256046984 is about 16001.4681826387. The cubic root of 256046984 is about 634.9992634377. Note that the first 3 decimals are identical.

The spelling of 256046984 in words is "two hundred fifty-six million, forty-six thousand, nine hundred eighty-four".