128017433 has 8 divisors (see below), whose sum is σ = 130442400. Its totient is φ = 125601088.

The previous prime is 128017411. The next prime is 128017441. The reversal of 128017433 is 334710821.

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

It is not a de Polignac number, because 128017433 - 2¹⁶ = 127951897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128017396 and 128017405.

It is not an unprimeable number, because it can be changed into a prime (128017453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33158 + ... + 36816.

It is an arithmetic number, because the mean of its divisors is an integer number (16305300).

Almost surely, 2^128017433 is an apocalyptic number.

It is an amenable number.

128017433 is a deficient number, since it is larger than the sum of its proper divisors (2424967).

128017433 is an equidigital number, since it uses as much as digits as its factorization.

128017433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 128017433 is about 11314.4789097863. The cubic root of 128017433 is about 503.9912982982.

The spelling of 128017433 in words is "one hundred twenty-eight million, seventeen thousand, four hundred thirty-three".