128855694 has 32 divisors (see below), whose sum is σ = 281752704. Its totient is φ = 38962080.

The previous prime is 128855693. The next prime is 128855737. The reversal of 128855694 is 496558821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128855693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32652 + ... + 36384.

It is an arithmetic number, because the mean of its divisors is an integer number (8804772).

Almost surely, 2^128855694 is an apocalyptic number.

128855694 is an abundant number, since it is smaller than the sum of its proper divisors (152897010).

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

128855694 is a wasteful number, since it uses less digits than its factorization.

128855694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 691200, while the sum is 48.

The square root of 128855694 is about 11351.4621965630. The cubic root of 128855694 is about 505.0889546923.

The spelling of 128855694 in words is "one hundred twenty-eight million, eight hundred fifty-five thousand, six hundred ninety-four".