128863888 has 20 divisors (see below), whose sum is σ = 251210608. Its totient is φ = 64035360.

The previous prime is 128863879. The next prime is 128863897. The reversal of 128863888 is 888368821.

It is an interprime number because it is at equal distance from previous prime (128863879) and next prime (128863897).

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, 22098 + ... + 27313.

Almost surely, 2^128863888 is an apocalyptic number.

It is an amenable number.

128863888 is a deficient number, since it is larger than the sum of its proper divisors (122346720).

128863888 is a wasteful number, since it uses less digits than its factorization.

128863888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49582 (or 49576 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 52.

The square root of 128863888 is about 11351.8231134915. The cubic root of 128863888 is about 505.0996607543.

The spelling of 128863888 in words is "one hundred twenty-eight million, eight hundred sixty-three thousand, eight hundred eighty-eight".