128379806 has 16 divisors (see below), whose sum is σ = 194123520. Its totient is φ = 63674520.

The previous prime is 128379799. The next prime is 128379817. The reversal of 128379806 is 608973821.

128379806 = 185² + 186² + ... + 731².

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, 234425 + ... + 234971.

It is an arithmetic number, because the mean of its divisors is an integer number (12132720).

Almost surely, 2^128379806 is an apocalyptic number.

128379806 is a deficient number, since it is larger than the sum of its proper divisors (65743714).

128379806 is a wasteful number, since it uses less digits than its factorization.

128379806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 128379806 is about 11330.4812783924. The cubic root of 128379806 is about 504.4663918890.

The spelling of 128379806 in words is "one hundred twenty-eight million, three hundred seventy-nine thousand, eight hundred six".