256348356 has 24 divisors (see below), whose sum is σ = 652523424. Its totient is φ = 77681280.

The previous prime is 256348349. The next prime is 256348381. The reversal of 256348356 is 653843652.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 970885 + ... + 971148.

It is an arithmetic number, because the mean of its divisors is an integer number (27188476).

Almost surely, 2^256348356 is an apocalyptic number.

It is an amenable number.

256348356 is an abundant number, since it is smaller than the sum of its proper divisors (396175068).

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

256348356 is a wasteful number, since it uses less digits than its factorization.

256348356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942051 (or 1942049 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 256348356 is about 16010.8824241514. The cubic root of 256348356 is about 635.2483010188.

The spelling of 256348356 in words is "two hundred fifty-six million, three hundred forty-eight thousand, three hundred fifty-six".