128433155 has 8 divisors (see below), whose sum is σ = 159091584. Its totient is φ = 99432000.

The previous prime is 128433139. The next prime is 128433163. The reversal of 128433155 is 551334821.

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

It is not a de Polignac number, because 128433155 - 2⁴ = 128433139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414146 + ... + 414455.

It is an arithmetic number, because the mean of its divisors is an integer number (19886448).

Almost surely, 2^128433155 is an apocalyptic number.

128433155 is a deficient number, since it is larger than the sum of its proper divisors (30658429).

128433155 is an equidigital number, since it uses as much as digits as its factorization.

128433155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828637.

The product of its digits is 14400, while the sum is 32.

The square root of 128433155 is about 11332.8352586632. The cubic root of 128433155 is about 504.5362602255.

Adding to 128433155 its reverse (551334821), we get a palindrome (679767976).

The spelling of 128433155 in words is "one hundred twenty-eight million, four hundred thirty-three thousand, one hundred fifty-five".