128862268 has 12 divisors (see below), whose sum is σ = 231604072. Its totient is φ = 62689680.

The previous prime is 128862241. The next prime is 128862277. The reversal of 128862268 is 862268821.

It is a super-2 number, since 2×128862268² = 33210968228207648, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435198 + ... + 435493.

Almost surely, 2^128862268 is an apocalyptic number.

It is an amenable number.

128862268 is a deficient number, since it is larger than the sum of its proper divisors (102741804).

128862268 is a wasteful number, since it uses less digits than its factorization.

128862268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870732 (or 870730 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 128862268 is about 11351.7517590899. The cubic root of 128862268 is about 505.0975441415.

The spelling of 128862268 in words is "one hundred twenty-eight million, eight hundred sixty-two thousand, two hundred sixty-eight".