128253833 has 4 divisors (see below), whose sum is σ = 128325120. Its totient is φ = 128182548.

The previous prime is 128253823. The next prime is 128253883. The reversal of 128253833 is 338352821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 338352821 = 5641 ⋅59981.

It is a cyclic number.

It is not a de Polignac number, because 128253833 - 2⁴ = 128253817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128253793 and 128253802.

It is not an unprimeable number, because it can be changed into a prime (128253823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32873 + ... + 36566.

It is an arithmetic number, because the mean of its divisors is an integer number (32081280).

Almost surely, 2^128253833 is an apocalyptic number.

It is an amenable number.

128253833 is a deficient number, since it is larger than the sum of its proper divisors (71287).

128253833 is an equidigital number, since it uses as much as digits as its factorization.

128253833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71286.

The product of its digits is 34560, while the sum is 35.

The square root of 128253833 is about 11324.9208827258. The cubic root of 128253833 is about 504.3013349276.

The spelling of 128253833 in words is "one hundred twenty-eight million, two hundred fifty-three thousand, eight hundred thirty-three".