268512389 has 8 divisors (see below), whose sum is σ = 286224000. Its totient is φ = 251158752.

The previous prime is 268512383. The next prime is 268512397. The reversal of 268512389 is 983215862.

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

It is a cyclic number.

It is not a de Polignac number, because 268512389 - 2⁸ = 268512133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268512383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87944 + ... + 90945.

It is an arithmetic number, because the mean of its divisors is an integer number (35778000).

Almost surely, 2^268512389 is an apocalyptic number.

It is an amenable number.

268512389 is a deficient number, since it is larger than the sum of its proper divisors (17711611).

268512389 is a wasteful number, since it uses less digits than its factorization.

268512389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178987.

The product of its digits is 207360, while the sum is 44.

The square root of 268512389 is about 16386.3476406428. The cubic root of 268512389 is about 645.1411977801.

The spelling of 268512389 in words is "two hundred sixty-eight million, five hundred twelve thousand, three hundred eighty-nine".