128850434 has 8 divisors (see below), whose sum is σ = 193378428. Its totient is φ = 64390960.

The previous prime is 128850433. The next prime is 128850443. The reversal of 128850434 is 434058821.

It can be written as a sum of positive squares in 2 ways, for example, as 93412225 + 35438209 = 9665^2 + 5953^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128850394 and 128850403.

It is not an unprimeable number, because it can be changed into a prime (128850433) 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, 12137 + ... + 20124.

Almost surely, 2^128850434 is an apocalyptic number.

128850434 is a deficient number, since it is larger than the sum of its proper divisors (64527994).

128850434 is a wasteful number, since it uses less digits than its factorization.

128850434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34260.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 128850434 is about 11351.2305059848. The cubic root of 128850434 is about 505.0820818772.

The spelling of 128850434 in words is "one hundred twenty-eight million, eight hundred fifty thousand, four hundred thirty-four".