128366808 has 32 divisors (see below), whose sum is σ = 323267760. Its totient is φ = 42475520.

The previous prime is 128366773. The next prime is 128366827. The reversal of 128366808 is 808663821.

It is a super-2 number, since 2×128366808² = 32956074792217728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128366808.

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, 16233 + ... + 22808.

Almost surely, 2^128366808 is an apocalyptic number.

It is an amenable number.

128366808 is an abundant number, since it is smaller than the sum of its proper divisors (194900952).

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

128366808 is a wasteful number, since it uses less digits than its factorization.

128366808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39187 (or 39183 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 128366808 is about 11329.9076783529. The cubic root of 128366808 is about 504.4493661701.

The spelling of 128366808 in words is "one hundred twenty-eight million, three hundred sixty-six thousand, eight hundred eight".