256448029 has 8 divisors (see below), whose sum is σ = 258136128. Its totient is φ = 254765280.

The previous prime is 256448021. The next prime is 256448033. The reversal of 256448029 is 920844652.

256448029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 256448029 - 2³ = 256448021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256447982 and 256448000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256448021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139144 + ... + 140974.

It is an arithmetic number, because the mean of its divisors is an integer number (32267016).

Almost surely, 2^256448029 is an apocalyptic number.

It is an amenable number.

256448029 is a deficient number, since it is larger than the sum of its proper divisors (1688099).

256448029 is a wasteful number, since it uses less digits than its factorization.

256448029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 256448029 is about 16013.9947858116. The cubic root of 256448029 is about 635.3306224614.

The spelling of 256448029 in words is "two hundred fifty-six million, four hundred forty-eight thousand, twenty-nine".