128506234 has 8 divisors (see below), whose sum is σ = 202904640. Its totient is φ = 60871356.

The previous prime is 128506223. The next prime is 128506243. The reversal of 128506234 is 432605821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128506196 and 128506205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1690834 + ... + 1690909.

It is an arithmetic number, because the mean of its divisors is an integer number (25363080).

Almost surely, 2^128506234 is an apocalyptic number.

128506234 is a deficient number, since it is larger than the sum of its proper divisors (74398406).

128506234 is a wasteful number, since it uses less digits than its factorization.

128506234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381764.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 128506234 is about 11336.0590153721. The cubic root of 128506234 is about 504.6319364921.

The spelling of 128506234 in words is "one hundred twenty-eight million, five hundred six thousand, two hundred thirty-four".