128783606 has 32 divisors (see below), whose sum is σ = 234584640. Its totient is φ = 51843456.

The previous prime is 128783597. The next prime is 128783651. The reversal of 128783606 is 606387821.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10736 + ... + 19308.

It is an arithmetic number, because the mean of its divisors is an integer number (7330770).

Almost surely, 2^128783606 is an apocalyptic number.

128783606 is a deficient number, since it is larger than the sum of its proper divisors (105801034).

128783606 is a wasteful number, since it uses less digits than its factorization.

128783606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8648.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 128783606 is about 11348.2864785835. The cubic root of 128783606 is about 504.9947468656.

The spelling of 128783606 in words is "one hundred twenty-eight million, seven hundred eighty-three thousand, six hundred six".