128935294 has 4 divisors (see below), whose sum is σ = 193402944. Its totient is φ = 64467646.

The previous prime is 128935291. The next prime is 128935307. The reversal of 128935294 is 492539821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 492539821 = 6997 ⋅70393.

It is a self number, because there is not a number n which added to its sum of digits gives 128935294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128935291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32233822 + ... + 32233825.

It is an arithmetic number, because the mean of its divisors is an integer number (48350736).

Almost surely, 2^128935294 is an apocalyptic number.

128935294 is a deficient number, since it is larger than the sum of its proper divisors (64467650).

128935294 is an equidigital number, since it uses as much as digits as its factorization.

128935294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64467649.

The product of its digits is 155520, while the sum is 43.

The square root of 128935294 is about 11354.9678114911. The cubic root of 128935294 is about 505.1929387268.

The spelling of 128935294 in words is "one hundred twenty-eight million, nine hundred thirty-five thousand, two hundred ninety-four".