128577852 has 36 divisors (see below), whose sum is σ = 350018760. Its totient is φ = 39562272.

The previous prime is 128577833. The next prime is 128577881. The reversal of 128577852 is 258775821.

128577852 is a `hidden beast` number, since 1 + 28 + 577 + 8 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 128577798 and 128577807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136902 + ... + 137837.

Almost surely, 2^128577852 is an apocalyptic number.

128577852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128577852 is an abundant number, since it is smaller than the sum of its proper divisors (221440908).

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

128577852 is a wasteful number, since it uses less digits than its factorization.

128577852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274762 (or 274757 counting only the distinct ones).

The product of its digits is 313600, while the sum is 45.

The square root of 128577852 is about 11339.2174333152. The cubic root of 128577852 is about 504.7256648068.

The spelling of 128577852 in words is "one hundred twenty-eight million, five hundred seventy-seven thousand, eight hundred fifty-two".