128272562 has 24 divisors (see below), whose sum is σ = 215777520. Its totient is φ = 56716560.

The previous prime is 128272523. The next prime is 128272567. The reversal of 128272562 is 265272821.

It is not an unprimeable number, because it can be changed into a prime (128272567) 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 11 ways as a sum of consecutive naturals, for example, 27989 + ... + 32247.

It is an arithmetic number, because the mean of its divisors is an integer number (8990730).

Almost surely, 2^128272562 is an apocalyptic number.

128272562 is a deficient number, since it is larger than the sum of its proper divisors (87504958).

128272562 is a wasteful number, since it uses less digits than its factorization.

128272562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346 (or 4309 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 128272562 is about 11325.7477457341. The cubic root of 128272562 is about 504.3258815623.

The spelling of 128272562 in words is "one hundred twenty-eight million, two hundred seventy-two thousand, five hundred sixty-two".