128862678 has 16 divisors (see below), whose sum is σ = 294543360. Its totient is φ = 36817896.

The previous prime is 128862661. The next prime is 128862697. The reversal of 128862678 is 876268821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1534038 + ... + 1534121.

It is an arithmetic number, because the mean of its divisors is an integer number (18408960).

Almost surely, 2^128862678 is an apocalyptic number.

128862678 is an abundant number, since it is smaller than the sum of its proper divisors (165680682).

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

128862678 is a wasteful number, since it uses less digits than its factorization.

128862678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068171.

The product of its digits is 516096, while the sum is 48.

The square root of 128862678 is about 11351.7698179623. The cubic root of 128862678 is about 505.0980798291.

The spelling of 128862678 in words is "one hundred twenty-eight million, eight hundred sixty-two thousand, six hundred seventy-eight".