128275552 has 24 divisors (see below), whose sum is σ = 258704712. Its totient is φ = 62572800.

The previous prime is 128275547. The next prime is 128275571. The reversal of 128275552 is 255572821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47574 + ... + 50197.

It is an arithmetic number, because the mean of its divisors is an integer number (10779363).

Almost surely, 2^128275552 is an apocalyptic number.

It is an amenable number.

128275552 is an abundant number, since it is smaller than the sum of its proper divisors (130429160).

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

128275552 is an equidigital number, since it uses as much as digits as its factorization.

128275552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97822 (or 97814 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 128275552 is about 11325.8797450794. The cubic root of 128275552 is about 504.3298001002.

The spelling of 128275552 in words is "one hundred twenty-eight million, two hundred seventy-five thousand, five hundred fifty-two".