268256890 has 32 divisors (see below), whose sum is σ = 527446080. Its totient is φ = 97420800.

The previous prime is 268256887. The next prime is 268256897. The reversal of 268256890 is 98652862.

It is a self number, because there is not a number n which added to its sum of digits gives 268256890.

It is not an unprimeable number, because it can be changed into a prime (268256897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141066 + ... + 142954.

It is an arithmetic number, because the mean of its divisors is an integer number (16482690).

Almost surely, 2^268256890 is an apocalyptic number.

268256890 is a deficient number, since it is larger than the sum of its proper divisors (259189190).

268256890 is a wasteful number, since it uses less digits than its factorization.

268256890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 268256890 is about 16378.5496915936. The cubic root of 268256890 is about 644.9365079821.

The spelling of 268256890 in words is "two hundred sixty-eight million, two hundred fifty-six thousand, eight hundred ninety".