128694806 has 32 divisors (see below), whose sum is σ = 204001632. Its totient is φ = 60825600.

The previous prime is 128694803. The next prime is 128694817. The reversal of 128694806 is 608496821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128694803) 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, 500630 + ... + 500886.

It is an arithmetic number, because the mean of its divisors is an integer number (6375051).

Almost surely, 2^128694806 is an apocalyptic number.

128694806 is a deficient number, since it is larger than the sum of its proper divisors (75306826).

128694806 is a wasteful number, since it uses less digits than its factorization.

128694806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 128694806 is about 11344.3733189630. The cubic root of 128694806 is about 504.8786507106.

The spelling of 128694806 in words is "one hundred twenty-eight million, six hundred ninety-four thousand, eight hundred six".