128324435 has 4 divisors (see below), whose sum is σ = 153989328. Its totient is φ = 102659544.

The previous prime is 128324431. The next prime is 128324459. The reversal of 128324435 is 534423821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 534423821 = 613 ⋅871817.

It is a cyclic number.

It is not a de Polignac number, because 128324435 - 2² = 128324431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128324431) 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, 12832439 + ... + 12832448.

It is an arithmetic number, because the mean of its divisors is an integer number (38497332).

Almost surely, 2^128324435 is an apocalyptic number.

128324435 is a deficient number, since it is larger than the sum of its proper divisors (25664893).

128324435 is an equidigital number, since it uses as much as digits as its factorization.

128324435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25664892.

The product of its digits is 23040, while the sum is 32.

The square root of 128324435 is about 11328.0375617315. The cubic root of 128324435 is about 504.3938549735.

The spelling of 128324435 in words is "one hundred twenty-eight million, three hundred twenty-four thousand, four hundred thirty-five".