128582061 has 8 divisors (see below), whose sum is σ = 172495200. Its totient is φ = 85195152.

The previous prime is 128582057. The next prime is 128582071. The reversal of 128582061 is 160285821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128582061 - 2² = 128582057 is a prime.

It is a super-2 number, since 2×128582061² = 33066692822015442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128582011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 130986 + ... + 131963.

It is an arithmetic number, because the mean of its divisors is an integer number (21561900).

Almost surely, 2^128582061 is an apocalyptic number.

It is an amenable number.

128582061 is a deficient number, since it is larger than the sum of its proper divisors (43913139).

128582061 is a wasteful number, since it uses less digits than its factorization.

128582061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263115.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 128582061 is about 11339.4030266148. The cubic root of 128582061 is about 504.7311721502.

The spelling of 128582061 in words is "one hundred twenty-eight million, five hundred eighty-two thousand, sixty-one".