268915390 has 32 divisors (see below), whose sum is σ = 500981760. Its totient is φ = 103821600.

The previous prime is 268915363. The next prime is 268915393. The reversal of 268915390 is 93519862.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268915393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 147585 + ... + 149395.

It is an arithmetic number, because the mean of its divisors is an integer number (15655680).

Almost surely, 2^268915390 is an apocalyptic number.

268915390 is a deficient number, since it is larger than the sum of its proper divisors (232066370).

268915390 is a wasteful number, since it uses less digits than its factorization.

268915390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 268915390 is about 16398.6398826244. The cubic root of 268915390 is about 645.4637931805.

The spelling of 268915390 in words is "two hundred sixty-eight million, nine hundred fifteen thousand, three hundred ninety".