268440506 has 8 divisors (see below), whose sum is σ = 426346740. Its totient is φ = 126324928.

The previous prime is 268440503. The next prime is 268440541. The reversal of 268440506 is 605044862.

It can be written as a sum of positive squares in 2 ways, for example, as 266505625 + 1934881 = 16325^2 + 1391^2 .

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

It is not an unprimeable number, because it can be changed into a prime (268440503) 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, 3947621 + ... + 3947688.

Almost surely, 2^268440506 is an apocalyptic number.

268440506 is a deficient number, since it is larger than the sum of its proper divisors (157906234).

268440506 is a wasteful number, since it uses less digits than its factorization.

268440506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895328.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 268440506 is about 16384.1541130447. The cubic root of 268440506 is about 645.0836227538.

The spelling of 268440506 in words is "two hundred sixty-eight million, four hundred forty thousand, five hundred six".