128197048 has 16 divisors (see below), whose sum is σ = 274708080. Its totient is φ = 54941568.

The previous prime is 128197033. The next prime is 128197057. The reversal of 128197048 is 840791821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 128197048.

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, 1144561 + ... + 1144672.

It is an arithmetic number, because the mean of its divisors is an integer number (17169255).

Almost surely, 2^128197048 is an apocalyptic number.

It is an amenable number.

128197048 is an abundant number, since it is smaller than the sum of its proper divisors (146511032).

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

128197048 is a wasteful number, since it uses less digits than its factorization.

128197048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289246 (or 2289242 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 128197048 is about 11322.4135236265. The cubic root of 128197048 is about 504.2268966619.

The spelling of 128197048 in words is "one hundred twenty-eight million, one hundred ninety-seven thousand, forty-eight".