128876895 has 48 divisors (see below), whose sum is σ = 258223680. Its totient is φ = 58240512.

The previous prime is 128876873. The next prime is 128876903. The reversal of 128876895 is 598678821.

It is not a de Polignac number, because 128876895 - 2⁵ = 128876863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25737 + ... + 30333.

It is an arithmetic number, because the mean of its divisors is an integer number (5379660).

Almost surely, 2^128876895 is an apocalyptic number.

128876895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128876895 is an abundant number, since it is smaller than the sum of its proper divisors (129346785).

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

128876895 is a wasteful number, since it uses less digits than its factorization.

128876895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704 (or 4701 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 128876895 is about 11352.3960026067. The cubic root of 128876895 is about 505.1166544220.

The spelling of 128876895 in words is "one hundred twenty-eight million, eight hundred seventy-six thousand, eight hundred ninety-five".