256033449 has 12 divisors (see below), whose sum is σ = 422658496. Its totient is φ = 146304792.

The previous prime is 256033441. The next prime is 256033469. The reversal of 256033449 is 944330652.

256033449 is a `hidden beast` number, since 2 + 5 + 603 + 3 + 4 + 49 = 666.

It is not a de Polignac number, because 256033449 - 2³ = 256033441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256033441) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 2031949 + ... + 2032074.

Almost surely, 2^256033449 is an apocalyptic number.

It is an amenable number.

256033449 is a deficient number, since it is larger than the sum of its proper divisors (166625047).

256033449 is a wasteful number, since it uses less digits than its factorization.

256033449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064036 (or 4064033 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 256033449 is about 16001.0452471081. The cubic root of 256033449 is about 634.9880742588.

The spelling of 256033449 in words is "two hundred fifty-six million, thirty-three thousand, four hundred forty-nine".