128103552 has 128 divisors (see below), whose sum is σ = 382867200. Its totient is φ = 42163200.

The previous prime is 128103541. The next prime is 128103553. The reversal of 128103552 is 255301821.

It is a happy number.

128103552 is a `hidden beast` number, since 1 + 2 + 8 + 103 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (128103553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348873 + ... + 349239.

It is an arithmetic number, because the mean of its divisors is an integer number (2991150).

Almost surely, 2^128103552 is an apocalyptic number.

128103552 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 128103552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191433600).

128103552 is an abundant number, since it is smaller than the sum of its proper divisors (254763648).

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

128103552 is a wasteful number, since it uses less digits than its factorization.

128103552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 128103552 is about 11318.2839688709. The cubic root of 128103552 is about 504.1042868097.

The spelling of 128103552 in words is "one hundred twenty-eight million, one hundred three thousand, five hundred fifty-two".