128485620 has 72 divisors (see below), whose sum is σ = 390665184. Its totient is φ = 34181568.

The previous prime is 128485601. The next prime is 128485661. The reversal of 128485620 is 26584821.

128485620 is a `hidden beast` number, since 1 + 28 + 4 + 8 + 5 + 620 = 666.

It is a super-3 number, since 3×128485620³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141207 + ... + 142113.

Almost surely, 2^128485620 is an apocalyptic number.

128485620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128485620 is an abundant number, since it is smaller than the sum of its proper divisors (262179564).

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

128485620 is a wasteful number, since it uses less digits than its factorization.

128485620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 128485620 is about 11335.1497563993. The cubic root of 128485620 is about 504.6049519672.

The spelling of 128485620 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, six hundred twenty".