256384001 has 4 divisors (see below), whose sum is σ = 256694100. Its totient is φ = 256073904.

The previous prime is 256383943. The next prime is 256384039. The reversal of 256384001 is 100483652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112360000 + 144024001 = 10600^2 + 12001^2 .

It is a cyclic number.

It is not a de Polignac number, because 256384001 - 2⁶ = 256383937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256384301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153806 + ... + 155463.

It is an arithmetic number, because the mean of its divisors is an integer number (64173525).

Almost surely, 2^256384001 is an apocalyptic number.

It is an amenable number.

256384001 is a deficient number, since it is larger than the sum of its proper divisors (310099).

256384001 is an equidigital number, since it uses as much as digits as its factorization.

256384001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310098.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 256384001 is about 16011.9955345984. The cubic root of 256384001 is about 635.2777432157.

The spelling of 256384001 in words is "two hundred fifty-six million, three hundred eighty-four thousand, one".