128612170 has 8 divisors (see below), whose sum is σ = 231501924. Its totient is φ = 51444864.

The previous prime is 128612167. The next prime is 128612171. The reversal of 128612170 is 71216821.

It can be written as a sum of positive squares in 2 ways, for example, as 120978001 + 7634169 = 10999^2 + 2763^2 .

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 (128612171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6430599 + ... + 6430618.

Almost surely, 2^128612170 is an apocalyptic number.

128612170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128612170 is a deficient number, since it is larger than the sum of its proper divisors (102889754).

128612170 is a wasteful number, since it uses less digits than its factorization.

128612170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12861224.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 128612170 is about 11340.7305761137. The cubic root of 128612170 is about 504.7705653198.

Adding to 128612170 its reverse (71216821), we get a palindrome (199828991).

It can be divided in two parts, 1286 and 12170, that added together give a square (13456 = 116²).

The spelling of 128612170 in words is "one hundred twenty-eight million, six hundred twelve thousand, one hundred seventy".