256602018 has 8 divisors (see below), whose sum is σ = 513204048. Its totient is φ = 85534004.

The previous prime is 256601987. The next prime is 256602061. The reversal of 256602018 is 810206652.

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

256602018 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21383496 + ... + 21383507.

It is an arithmetic number, because the mean of its divisors is an integer number (64150506).

Almost surely, 2^256602018 is an apocalyptic number.

256602018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256602018 is a wasteful number, since it uses less digits than its factorization.

256602018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42767008.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 256602018 is about 16018.8020151321. The cubic root of 256602018 is about 635.4577623892.

The spelling of 256602018 in words is "two hundred fifty-six million, six hundred two thousand, eighteen".