268489915 has 8 divisors (see below), whose sum is σ = 332581248. Its totient is φ = 207863040.

The previous prime is 268489913. The next prime is 268489919. The reversal of 268489915 is 519984862.

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

It is not a de Polignac number, because 268489915 - 2¹ = 268489913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268489913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865942 + ... + 866251.

It is an arithmetic number, because the mean of its divisors is an integer number (41572656).

Almost surely, 2^268489915 is an apocalyptic number.

268489915 is a deficient number, since it is larger than the sum of its proper divisors (64091333).

268489915 is a wasteful number, since it uses less digits than its factorization.

268489915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732229.

The product of its digits is 1244160, while the sum is 52.

The square root of 268489915 is about 16385.6618725030. The cubic root of 268489915 is about 645.1231982285.

It can be divided in two parts, 26848 and 9915, that added together give a palindrome (36763).

The spelling of 268489915 in words is "two hundred sixty-eight million, four hundred eighty-nine thousand, nine hundred fifteen".