268897128 has 32 divisors (see below), whose sum is σ = 673620000. Its totient is φ = 89448768.

The previous prime is 268897121. The next prime is 268897129. The reversal of 268897128 is 821798862.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (268897121) 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, 750 + ... + 23202.

It is an arithmetic number, because the mean of its divisors is an integer number (21050625).

Almost surely, 2^268897128 is an apocalyptic number.

It is an amenable number.

268897128 is an abundant number, since it is smaller than the sum of its proper divisors (404722872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268897128 is a wasteful number, since it uses less digits than its factorization.

268897128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22961 (or 22957 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 268897128 is about 16398.0830586993. The cubic root of 268897128 is about 645.4491817363.

The spelling of 268897128 in words is "two hundred sixty-eight million, eight hundred ninety-seven thousand, one hundred twenty-eight".