128278852 has 48 divisors (see below), whose sum is σ = 252591472. Its totient is φ = 56609280.

The previous prime is 128278841. The next prime is 128278859. The reversal of 128278852 is 258872821.

It can be written as a sum of positive squares in 8 ways, for example, as 498436 + 127780416 = 706^2 + 11304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128278799 and 128278808.

It is not an unprimeable number, because it can be changed into a prime (128278859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116818 + ... + 117910.

Almost surely, 2^128278852 is an apocalyptic number.

It is an amenable number.

128278852 is a deficient number, since it is larger than the sum of its proper divisors (124312620).

128278852 is a wasteful number, since it uses less digits than its factorization.

128278852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its digits is 143360, while the sum is 43.

The square root of 128278852 is about 11326.0254281897. The cubic root of 128278852 is about 504.3341248372.

The spelling of 128278852 in words is "one hundred twenty-eight million, two hundred seventy-eight thousand, eight hundred fifty-two".