128552112 has 120 divisors (see below), whose sum is σ = 396700304. Its totient is φ = 38610432.

The previous prime is 128552107. The next prime is 128552131. The reversal of 128552112 is 211255821.

It is a happy number.

128552112 is a `hidden beast` number, since 128 + 5 + 521 + 12 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 79698 + ... + 81294.

Almost surely, 2^128552112 is an apocalyptic number.

128552112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128552112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198350152).

128552112 is an abundant number, since it is smaller than the sum of its proper divisors (268148192).

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

128552112 is a wasteful number, since it uses less digits than its factorization.

128552112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1658 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 128552112 is about 11338.0823775452. The cubic root of 128552112 is about 504.6919822157.

The spelling of 128552112 in words is "one hundred twenty-eight million, five hundred fifty-two thousand, one hundred twelve".