268891970 has 16 divisors (see below), whose sum is σ = 485309880. Its totient is φ = 107266944.

The previous prime is 268891967. The next prime is 268891979. The reversal of 268891970 is 79198862.

It can be written as a sum of positive squares in 4 ways, for example, as 245204281 + 23687689 = 15659^2 + 4867^2 .

It is not an unprimeable number, because it can be changed into a prime (268891979) 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, 32315 + ... + 39774.

Almost surely, 2^268891970 is an apocalyptic number.

268891970 is a deficient number, since it is larger than the sum of its proper divisors (216417910).

268891970 is a wasteful number, since it uses less digits than its factorization.

268891970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72469.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 268891970 is about 16397.9257834642. The cubic root of 268891970 is about 645.4450546956.

The spelling of 268891970 in words is "two hundred sixty-eight million, eight hundred ninety-one thousand, nine hundred seventy".