128549234 has 8 divisors (see below), whose sum is σ = 210353328. Its totient is φ = 58431460.

The previous prime is 128549233. The next prime is 128549237. The reversal of 128549234 is 432945821.

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

It is not an unprimeable number, because it can be changed into a prime (128549233) 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 3 ways as a sum of consecutive naturals, for example, 2921552 + ... + 2921595.

It is an arithmetic number, because the mean of its divisors is an integer number (26294166).

Almost surely, 2^128549234 is an apocalyptic number.

128549234 is a deficient number, since it is larger than the sum of its proper divisors (81804094).

128549234 is a wasteful number, since it uses less digits than its factorization.

128549234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843160.

The product of its digits is 69120, while the sum is 38.

The square root of 128549234 is about 11337.9554594292. The cubic root of 128549234 is about 504.6882158718.

The spelling of 128549234 in words is "one hundred twenty-eight million, five hundred forty-nine thousand, two hundred thirty-four".