128102208 has 112 divisors (see below), whose sum is σ = 386608320. Its totient is φ = 37085184.

The previous prime is 128102201. The next prime is 128102243. The reversal of 128102208 is 802201821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128102201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40923 + ... + 43941.

It is an arithmetic number, because the mean of its divisors is an integer number (3451860).

Almost surely, 2^128102208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128102208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193304160).

128102208 is an abundant number, since it is smaller than the sum of its proper divisors (258506112).

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

128102208 is a wasteful number, since it uses less digits than its factorization.

128102208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3054 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 128102208 is about 11318.2245957571. The cubic root of 128102208 is about 504.1025238647.

The spelling of 128102208 in words is "one hundred twenty-eight million, one hundred two thousand, two hundred eight".